{"id":32,"date":"2021-10-25T14:14:02","date_gmt":"2021-10-25T05:14:02","guid":{"rendered":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/?page_id=32"},"modified":"2022-04-14T10:39:43","modified_gmt":"2022-04-14T01:39:43","slug":"our-research","status":"publish","type":"page","link":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/our-research.html","title":{"rendered":"Our Research"},"content":{"rendered":"

(1) \u6700\u9069\u5316\u6280\u8853\u306e\u958b\u767a\uff1a\u907a\u4f1d\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff0c\u5b9f\u9a13\u8a08\u753b\u6cd5\uff0c\u591a\u76ee\u7684\u6700\u9069\u5316\u306a\u3069\u6700\u9069\u5316\u6280\u8853\u958b\u767a\u3068\u6700\u9069\u5316\u30d7\u30ed\u30b0\u30e9\u30e0\u958b\u767a
\nDevelopment of optimization technology: Development of optimization technology and optimization programs such as genetic algorithm, design of experiments, and multi-objective optimization<\/h3>\n

\u6700\u9069\u5316\u3084\u6700\u9069\u8a2d\u8a08\u306f\uff0c\u3042\u3089\u3086\u308b\u5de5\u5b66\u5206\u91ce\u3068\u7523\u696d\u306b\u6df1\u304f\u95a2\u308f\u308b\u5927\u5909\u91cd\u8981\u306a\u6280\u8853\u3067\u3059\uff0eSDGs\u306e\u6839\u6e90\u306b\u95a2\u308f\u308b\u8003\u3048\u65b9\u3067\u3059\uff0e\u672c\u7814\u7a76\u5ba4\u3067\u306f\uff0c\u4e3b\u306b\u6a5f\u68b0\u88fd\u54c1\u3084\u8907\u5408\u6750\u6599\u69cb\u9020\u7269\u306a\u3069\u3078\u306e\u9069\u7528\u3092\u7814\u7a76\u3059\u308b\u3068\u3068\u3082\u306b\uff0c\u6700\u9069\u5316\u6280\u8853\u306e\u958b\u767a\u3082\u884c\u3063\u3066\u3044\u307e\u3059\uff0e\u307e\u305f\uff0cPSO\uff0cACO\u306a\u3069\u751f\u7269\u754c\u304b\u3089\u30d2\u30f3\u30c8\u3092\u5f97\u305f\u30e1\u30bf\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u306a\u65b0\u624b\u6cd5\u306e\u5fdc\u7528\u3084\u9010\u6b21\u8fd1\u4f3c\u6700\u9069\u5316\u6cd5\u306b\u3088\u308b\u5b9f\u7528\u7684\u624b\u6cd5\u3092\u7814\u7a76\u3057\u3066\u3044\u307e\u3059\uff0e
\nOptimization and optimal design are very important technologies that are deeply involved in all engineering fields and industries. This way of thinking is related to the fundamental roots of SDGs. In our lab, we mainly study the application to mechanical products and composite material structures in parallel with the development of optimization technologies. We are also studying applications of new metaheuristic methods such as PSO and ACO, which are inspired by biological phenomena, in addition to practical usage of sequential approximation optimization.<\/p>\n

\"\"
Schematic illustration of Particle Swarm Optimization (PSO)<\/figcaption><\/figure>\n
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Schematic illustration of sequential approximate optimization (SAO)<\/figcaption><\/figure>\n

(2) \u8907\u5408\u6750\u6599\u69cb\u9020\u306e\u5f37\u5ea6\uff0c\u632f\u52d5\uff0c\u5ea7\u5c48\u306a\u3069\u306e\u529b\u5b66\u89e3\u6790\uff1a \u89e3\u6790\u30e2\u30c7\u30eb\u306e\u958b\u767a\u3068\u6700\u9069\u5316\u624b\u6cd5\u306e\u9069\u7528\u4f8b
\nMechanical analysis of composite material structures (strength, vibration, buckling, etc.): Development of analytical models and application examples of optimization methods<\/h3>\n

\u70ad\u7d20\u7e4a\u7dad\u5f37\u5316\u8907\u5408\u6750\u6599(CFRP)\u306f\uff0c\u9ad8\u3044\u6bd4\u525b\u6027\u3068\u6bd4\u5f37\u5ea6\u306e\u7279\u5fb4\u3092\u6d3b\u7528\u3057\u3066\u5b87\u5b99\u822a\u7a7a\u5206\u91ce\u3067\u591a\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u304c\uff0c\u8fd1\u5e74\u3067\u306f\u30b3\u30b9\u30c8\u4f4e\u6e1b\u304c\u9032\u307f\uff0c\u81ea\u52d5\u8eca\u7523\u696d\u3078\u3082\u5e83\u304f\u5229\u7528\u304c\u62e1\u5927\u3057\u3066\u3044\u307e\u3059\uff0e\u3057\u304b\u3057\u7570\u65b9\u6027\u6750\u6599\u3092\u7a4d\u5c64\u3059\u308b\u305f\u3081\u529b\u5b66\u89e3\u6790\u304c\u96e3\u3057\u304f\uff0c\u307e\u305f\u69cb\u9020\u6700\u9069\u5316\u306b\u9069\u3057\u305f\u6750\u6599\u3068\u8a00\u308f\u308c\u7814\u7a76\u304c\u6d3b\u767a\u306b\u306a\u3055\u308c\u306a\u304c\u3089\u3082\uff0c\u305d\u306e\u65b9\u6cd5\u306f\u5b9f\u7528\u6bb5\u968e\u3088\u308a\u7814\u7a76\u30ec\u30d9\u30eb\u306b\u7559\u307e\u308b\u3082\u306e\u304c\u591a\u3044\u73fe\u72b6\u3067\u3059\uff0e
\n\u672c\u7814\u7a76\u5ba4\u3067\u306f\uff0c\u4f8b\u3048\u3070\u6750\u6599\u7570\u65b9\u6027\u3092\u8003\u616e\u3057\u305f\uff0c\u69d8\u3005\u306a\u89e3\u6790\u30bd\u30d5\u30c8\u304a\u3088\u3073\u30e2\u30c7\u30eb\u3092\u958b\u767a\u3057\uff0c\u89e3\u6790\u304a\u3088\u3073\u6700\u9069\u5316\u8a08\u7b97\u3092\u884c\u3063\u3066\u3044\u307e\u3059\uff0e\u307e\u305f\uff0c\u81ea\u7136\u754c\u306e\u6750\u6599\u306b\u7740\u60f3\u3057\u3066\uff0c\u5c40\u6240\u7684\u306a\u7570\u65b9\u6027\u3084\uff0c\u66f2\u7dda\u72b6\u306e\u5f37\u5316\u7e4a\u7dad\u3092\u6301\u3064\u8907\u5408\u6750\u6599\u3092\u63d0\u6848\u3057\uff0c\u305d\u306e\u89e3\u6790\u624b\u6cd5\u3084\u6700\u9069\u5316\u624b\u6cd5\u3092\u958b\u767a\u3057\u3066\u3044\u307e\u3059\uff0e\u66f2\u7dda\u72b6\u306e\u7e4a\u7dad\u306f\uff0c\u5f93\u6765\u306e\u76f4\u7dda\u72b6\u306e\u5f37\u5316\u7e4a\u7dad\u3092\u6301\u3064\u6750\u6599\u3088\u308a\u3082\uff0c\u632f\u52d5\u6570\u3084\u9762\u5185\u5f37\u5ea6\u306e\u9762\u3067\u512a\u308c\u305f\u6a5f\u68b0\u7684\u6027\u8cea\u3092\u793a\u3059\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u3063\u3066\u304d\u3066\u304a\u308a\uff0c\u6a5f\u68b0\u69cb\u9020\u7269\u306e\u9ad8\u6027\u80fd\u5316\u306b\u8ca2\u732e\u3067\u304d\u307e\u3059\uff0e
\nCarbon fiber reinforced composite material (CFRP) is widely used in the aerospace field due to its high specific rigidity and strength, but in recent years, cost reduction has progressed, and its use has expanded widely into the automobile industry. However, it is difficult to analyze the dynamic behavior due to its anisotropic material properties caused by lamination. Although these materials are suitable for structural optimization and research is being actively carried out, many of these methods remain at the research level and yet to reach the practical stage.
\nIn our laboratory, for example, we develop various analysis software and models considering material anisotropy and perform analysis and optimization calculations. Inspired by natural materials, we propose composite materials with local anisotropy and curved reinforcing fibers and develop specific analytical methods and optimization techniques. It has become clear that curved fibers exhibit superior mechanical properties in terms of frequency and in-plane strength compared to conventional materials with linear reinforcing fibers. Thus, improving the performance in mechanical structures.<\/p>\n

\"\"
Design of composite structures<\/figcaption><\/figure>\n
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Lamination theory for sandwich plates with soft cores<\/figcaption><\/figure>\n
\"\"
Fabrication of composite with tailored fiber placement machine.<\/figcaption><\/figure>\n
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3D printer for composite material<\/figcaption><\/figure>\n

(3) \u96fb\u7740\u6a39\u8102\u542b\u6d78\u6cd5\u3092\u7528\u3044\u305f\u65b0\u305f\u306a\u8907\u5408\u6750\u6599\u306e\u4f5c\u88fd\u65b9\u6cd5\u306e\u958b\u767a\u3068\u6027\u80fd\u8a55\u4fa1 \/ Development and performance evaluation of a new composite material fabrication method using electrodeposition resin impregnation method<\/h3>\n

\u96fb\u7740\u6a39\u8102\u542b\u6d78\u6cd5\u306f\uff0c\u96fb\u7740\u6280\u8853\u3092\u63f4\u7528\u3057\u305f\u70ad\u7d20\u7e4a\u7dad\u30d7\u30ea\u30d5\u30a9\u30fc\u30e0\u3078\u306e\u6a39\u8102\u542b\u6d78\u624b\u6cd5\u3067\u3042\u308b\uff0e\u96fb\u7740\u6280\u8853\u306f\u3082\u3068\u3082\u3068\u9632\u9306\u3092\u76ee\u7684\u3068\u3057\u3066\uff0c\u81ea\u52d5\u8eca\u8eca\u4f53\u306e\u4e0b\u5730\u5857\u88c5\u3068\u3057\u3066\u7528\u3044\u3089\u308c\u3066\u304d\u305f\u6280\u8853\u3067\u3042\u308a\uff0c\u305d\u306e\u4ed6\u306b\u306f\u5efa\u6750\u306e\u5857\u88c5\uff0c\u88c5\u98fe\u7528\u5857\u88c5\uff0c\u96fb\u5b50\u6750\u6599\u5206\u91ce\u3067\u6d3b\u7528\u3055\u308c\u3066\u3044\u308b\uff0e\u672c\u7814\u7a76\u3067\u306f\u30d5\u30a1\u30a4\u30d0\u30fc\u7e2b\u3044\u4ed8\u3051\u6a5f\u306b\u3088\u308bTFP\u6280\u8853 (Tailored Fiber Placement)\u3092\u7528\u3044\u3066\u4f5c\u88fd\u3057\u305f\u6a39\u8102\u304c\u672a\u542b\u6d78\u306e\u30d7\u30ea\u30d5\u30a9\u30fc\u30e0\u306b\uff0c\u96fb\u7740\u6a39\u8102\u542b\u6d78\u6cd5\u3092\u7528\u3044\u3066\u6a39\u8102\u3092\u542b\u6d78\u3059\u308b\u3053\u3068\u3067CFRP\u7a4d\u5c64\u677f\u3092\u4f5c\u88fd\u3057\u3066\u3044\u308b\uff0e\u96fb\u7740\u6a39\u8102\u542b\u6d78\u6cd5\u306e\u6982\u7565\u3092\u4ee5\u4e0b\u306b\u793a\u3059\uff0e\u30a8\u30dd\u30ad\u30b7\u57fa\u3092\u542b\u3080\u96fb\u89e3\u6db2\u306b\u30d7\u30ea\u30d5\u30a9\u30fc\u30e0\u3092\u6d78\u3057\uff0c\u30d7\u30ea\u30d5\u30a9\u30fc\u30e0\u3092\u9670\u6975\uff0c\u30b9\u30c6\u30f3\u30ec\u30b9\u30ef\u30a4\u30e4\u3092\u967d\u6975\u3068\u3057\u3066\u901a\u96fb\u3059\u308b\u3053\u3068\u3067\u70ad\u7d20\u7e4a\u7dad\u306e\u8868\u9762\u306b\u30a8\u30dd\u30ad\u30b7\u6a39\u8102\u3092\u6790\u51fa\u3055\u305b\uff0c\u6a39\u8102\u3092\u542b\u6d78\u3055\u305b\u308b\uff0e<\/p>\n

Electrodeposition resin molding is a method of impregnating carbon fiber preforms with resin using electrodeposition technology. Electrodeposition technology was originally used as a base coating for automobile bodies to prevent rust and is also utilized in the fields of building materials, decorative coatings, and electronic materials. In this study, CFRP laminates are fabricated by impregnating resin using an electrodeposition resin impregnation method on preforms that have not been impregnated with resin, which are fabricated using TFP technology (Tailored Fiber Placement) with a fiber stitching machine. A schematic of the electrodeposition resin molding method is shown below. The preform is immersed in an electrolytic solution containing epoxy groups, and the resin is impregnated by depositing epoxy resin on the surface of the carbon fiber by passing electricity through the preform as a cathode and the stainless wire as an anode.<\/p>\n

VaRTM\u6cd5\u306a\u3069\u306b\u4ee3\u8868\u3055\u308c\u308b\u30ea\u30ad\u30c3\u30c9\u30ec\u30b8\u30f3\u30e2\u30fc\u30eb\u30c7\u30a3\u30f3\u30b0\u6210\u5f62\u6cd5\u3067\u306f\u5727\u529b\u3092\u7528\u3044\u3066\u6a39\u8102\u3092\u7e4a\u7dad\u9593\u306b\u62bc\u3057\u8fbc\u307f\uff0c\u6a39\u8102\u3092\u542b\u6d78\u3055\u305b\u308b\uff0e\u4e00\u65b9\uff0c\u96fb\u7740\u6a39\u8102\u542b\u6d78\u6cd5\u3067\u306f\uff0c\u96fb\u6c17\u5316\u5b66\u7684\u306b\u6a39\u8102\u3092\u70ad\u7d20\u7e4a\u7dad\u8868\u9762\u306b\u6790\u51fa\u3055\u305b\u308b\u305f\u3081\uff0c\u30dc\u30a4\u30c9\u304c\u767a\u751f\u3057\u306b\u304f\u3044\uff0e\u307e\u305f\uff0c\u6a39\u8102\u306e\u6d41\u52d5\u3092\u4f34\u308f\u306a\u3044\u305f\u3081\uff0c\u66f2\u7dda\u72b6\u306e\u7e4a\u7dad\u5f62\u72b6\u3092\u4e71\u3055\u306a\u3044\u3068\u3044\u3046\u70b9\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u308b\uff0e\u305d\u306e\u305f\u3081\uff0c\u66f2\u7dda\u72b6\u306b\u7e4a\u7dad\u3092\u914d\u5411\u3057\u305f\u30d7\u30ea\u30d5\u30a9\u30fc\u30e0\u3092\u4f5c\u88fd\u3059\u308b\u3053\u3068\u306e\u3067\u304d\u308bTFP\u6280\u8853\u3068\u76f8\u6027\u304c\u826f\u3044\uff0e\u307e\u305f\uff0c\u901a\u96fb\u5f8c\uff0c\u96fb\u7740\u6db2\u304b\u3089\u5f15\u304d\u4e0a\u3052\u305f\u5f8c\u306f\u307e\u3060\u5b8c\u5168\u306b\u786c\u5316\u3057\u3066\u304a\u3089\u305a\u7c98\u7740\u6027\u3092\u6709\u3059\u308b\u305f\u3081\uff0c\u578b\u3092\u7528\u3044\u3066\u6210\u5f62\u3059\u308b\u3053\u3068\u3067\uff0c\u66f2\u9762\u6210\u5f62\u3059\u308b\u3053\u3068\u3084\u4e00\u4f53\u6210\u5f62\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3042\u308a\uff0c\u6210\u5f62\u81ea\u7531\u5ea6\u304c\u9ad8\u3044\uff0e<\/p>\n

Liquid resin molding methods, such as the VaRTM method, use pressure to press resin between fibers to impregnate them. On the other hand, the electrodeposition resin impregnation method electrochemically deposits resin on the surface of carbon fibers, which prevents the formation of voids. In addition, because the resin does not flow, the curved fiber shape is not disturbed. This makes it compatible with TFP technology, which can produce preforms with curvilinearly oriented fibers. After the electrodeposition solution is removed from the electrodeposition solution, the material is not fully cured and still has adhesive properties, so it can be molded with a mold to form curved surfaces or as a single piece.<\/p>\n

\"\"
Experimental setup<\/figcaption><\/figure>\n
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Electro-Activated Deposition Resin Molding<\/figcaption><\/figure>\n

(4) \u30ab\u30b9\u30bf\u30e0\u30e1\u30fc\u30c9\u30b9\u30c6\u30f3\u30c8\u306e\u6700\u9069\u5f62\u72b6\u8a2d\u8a08
\nOptimal shape design of custom-made stent<\/h3>\n

\u4eba\u53e3\u69cb\u6210\u306e\u9ad8\u5e74\u9f62\u5316\u306b\u3088\u308a\uff0c\u9ad8\u8102\u8840\u75c7\u306a\u3069\u306b\u3088\u308b\u8840\u7ba1\u72ed\u7a84\uff0c\u764c\u306a\u3069\u306b\u3088\u308b\u6c17\u7ba1\u3084\u5c3f\u9053\u306e\u72ed\u7a84\u304c\u5897\u3048\u3066\u3044\u307e\u3059\uff0e\u305d\u306e\u6cbb\u7642\u306b\u306f\u751f\u4f53\u5185\u30b9\u30c8\u30ec\u30c3\u30c1\u30e3\u306e\u4e00\u3064\u3067\u3042\u308b\u30b9\u30c6\u30f3\u30c8\u304c\u7528\u3044\u3089\u308c\u307e\u3059\uff0e\u30b9\u30c6\u30f3\u30c8\u306f\u4e3b\u306b\u91d1\u5c5e\u3092\u6750\u6599\u3068\u3059\u308b\u7db2\u76ee\u69cb\u9020\u3092\u6301\u3061\uff0c\u72ed\u7a84\u90e8\u306b\u633f\u5165\u3055\u308c\u305f\u5f8c\u306b\u62e1\u5f35\u3057\u72ed\u7a84\u90e8\u3092\u53d6\u308a\u9664\u304d\u307e\u3059\uff0e\u65e2\u88fd\u30b9\u30c6\u30f3\u30c8\u306f\u898f\u683c\u5316\u3055\u308c\u72ed\u7a84\u72b6\u614b\u306e\u500b\u4eba\u5dee\u3092\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\uff0e\u3057\u304b\u3057\u8907\u96d1\u306a\u90e8\u4f4d\u3078\u306f\u72ed\u7a84\u5f62\u72b6\u3092\u8003\u616e\u3057\u305f\u30c6\u30fc\u30e9\u30fc\u30e1\u30a4\u30c9\u8a2d\u8a08\u304c\u5fc5\u8981\u3067\u3059\uff0e\u3053\u306e\u305f\u3081\u306b\u306f\uff0c\u30b9\u30c6\u30f3\u30c8\u306e\u69cb\u9020\u3068\u5909\u5f62\u3068\u306e\u95a2\u4fc2\u3092\u660e\u78ba\u306b\u3057\uff0c\u30b9\u30c6\u30f3\u30c8\u306e\u5909\u5f62\u3092\u305d\u306e\u69cb\u9020\u304b\u3089\u5236\u5fa1\u3059\u308b\u624b\u6cd5\u304c\u5fc5\u8981\u3067\u3059\uff0e\u672c\u7814\u7a76\u5ba4\u3067\u306f\uff0c\u30d0\u30eb\u30fc\u30f3\u62e1\u5f35\u578b\u30b9\u30c6\u30f3\u30c8\u304a\u3088\u3073\u81ea\u5df1\u62e1\u5f35\u30b9\u30c6\u30f3\u30c8\u3092\u4efb\u610f\u306b\u5909\u5f62\u3055\u305b\u308b\u624b\u6cd5\u3092\u958b\u767a\u3059\u308b\u305f\u3081\uff0c\u6709\u9650\u8981\u7d20\u89e3\u6790\u3084\u30c8\u30dd\u30ed\u30b8\u30fc\u6700\u9069\u5316\u624b\u6cd5\u3092\u99c6\u4f7f\u3057\uff0c\u3088\u308a\u512a\u308c\u305f\u30b9\u30c6\u30f3\u30c8\u3092\u8a2d\u8a08\u3057\u3001\uff13D\u30d7\u30ea\u30f3\u30bf\u30fc\u306b\u3088\u308b\u88fd\u4f5c\u307e\u3067\u884c\u3046\u305f\u3081\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002
\nDue to the aging of the population, vascular stenosis due to hyperlipidemia and tracheal and urethral stenosis due to cancer are increasing. A stent, which is one of the in-vivo stretchers, is used for the treatment. The stent has a network structure mainly made of metal, and after being inserted into the stenosis, it expands and removes the stenosis. Conventional stents are standardized and cannot take into account individual differences in stenotic conditions. However, for complicated conditions, a tailor-made design considering the shape of the stenosis is more suitable. For this purpose, it is necessary to clarify the relationship between the structure of the stent and its deformation and to control the deformation of the stent from that structure. In our laboratory, to develop a method for arbitrarily deforming balloon-expandable stents and self-expanding stents, we make full use of finite element analysis and topology optimization methods. Through these processes, we are able to design better stents and even manufacture them with a 3D printer.<\/p>\n

(5) \u7c98\u5851\u6027\u69cb\u6210\u30e2\u30c7\u30eb\u306b\u3088\u308b\u96fb\u5b50\u5b9f\u88c5\u57fa\u677f\u306e\u63a5\u7d9a\u90e8\u306e\u5f37\u5ea6\u89e3\u6790
\nStrength analysis of electronic package connectors by using an visco-elastic constitutive model<\/h3>\n

\u672c\u7814\u7a76\u3067\u306f\uff0c\u5c0f\u578b\u5316\u30fb\u8907\u96d1\u5316\u3055\u308c\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u5b89\u5168\u6027\u30fb\u4fe1\u983c\u6027\u3092\u4fdd\u3064\u8a2d\u8a08\u306e\u305f\u3081\u306b\uff0c\u305d\u308c\u305e\u308c\u306e\u69cb\u6210\u6750\u6599\u306e\u30de\u30a4\u30af\u30ed\u30ec\u30d9\u30eb\u3067\u306e\u7d44\u7e54\u72b6\u614b\u304a\u3088\u3073\u5f37\u5ea6\u8a55\u4fa1\u3068\u30b5\u30d6\u30de\u30a4\u30af\u30ed\u30b5\u30a4\u30ba\u3067\u306e\u5f37\u5ea6\u8a55\u4fa1\uff0c\u304a\u3088\u3073\uff0c\u30d1\u30c3\u30b1\u30fc\u30b8\u5168\u4f53\u3092\u4e00\u3064\u306e\u8907\u5408\u6750\u6599\u3068\u6349\u3048\u305f\u7b49\u4fa1\u8907\u5408\u30e2\u30c7\u30eb\u306b\u3088\u308b\u30de\u30af\u30ed\u30b5\u30a4\u30ba\u3067\u306e\u5f37\u5ea6\u8a55\u4fa1\u3092\u878d\u5408\u3057\u305f\u30de\u30eb\u30c1\u30ec\u30d9\u30eb\u30c7\u30b6\u30a4\u30f3\u306b\u3088\u308b\u6700\u9069\u69cb\u9020\u89e3\u6790\u624b\u6cd5\u306e\u69cb\u7bc9\u3092\u76ee\u6307\u3057\u3066\u3044\u307e\u3059\uff0e\u307e\u305f\uff0c\u3053\u306e\u305f\u3081\u306b\u306f\uff0c\u306f\u3093\u3060\u63a5\u7d9a\u90e8\u306e\u6b63\u78ba\u306a\u5909\u5f62\u7279\u6027\u3092\u89e3\u6790\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0e\u3053\u306e\u305f\u3081\u306b\uff0c\u30de\u30a4\u30af\u30ed\u30a4\u30f3\u30c7\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308b\u7c98\u5851\u6027\u5909\u5f62\u306e\u89e3\u660e\u3092\u884c\u3044\uff0c\u3055\u3089\u306b\uff0c\u5f3e\u5851\u6027\u30af\u30ea\u30fc\u30d7\u5206\u96e2\u578b\u30e2\u30c7\u30eb\u3084\u8ee2\u4f4d\u5bc6\u5ea6\u578b\u69cb\u6210\u30e2\u30c7\u30eb\u3092\u7528\u3044\u3066\u305d\u308c\u3089\u306e\u5909\u5f62\u7279\u6027\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3092\u8a66\u307f\u3066\u3044\u307e\u3059\uff0e\u69cb\u6210\u30e2\u30c7\u30eb\u3067\u4f7f\u7528\u3055\u308c\u308b\u6750\u6599\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u7c92\u5b50\u7fa4\u6700\u9069\u5316\u3084\u907a\u4f1d\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u7528\u3044\u3066\u52b9\u7387\u7684\u306b\u5b9a\u3081\u308b\u624b\u6cd5\u306b\u3064\u3044\u3066\u3082\u691c\u8a0e\u3057\u3066\u3044\u307e\u3059\uff0e
\nIn this study, in order to maintain the safety and reliability of miniaturized and complicated electronic packages, the microstructure and strength evaluation of each constituent material at the micro-level, and sub-micro level are required. We are aiming to build an optimal structural analysis method by a multi-level design that integrates strength evaluation at macro size by an equivalent composite model that regards the entire package as one composite material. For this purpose, it is necessary to analyze the accurate deformation characteristics of the solder connections. For this purpose, we are trying to clarify the viscoplastic deformation by micro indentation and describe the deformation characteristics using an elasto-plastic creep separation type model and the dislocation density type constitutive model. We are also investigating a method for efficiently determining the material parameters used in the constitutive model using particle swarm optimization and genetic algorithms.<\/p>\n

(6) \u5927\u52d5\u8108\u304a\u3088\u3073\u51a0\u52d5\u8108\u306e\u8840\u6d41\u89e3\u6790
\nBlood flow analysis of aorta and coronary arteries<\/h3>\n

\u793e\u4f1a\u306e\u9ad8\u9f62\u5316\u306b\u3088\u308a\u8840\u7ba1\u75be\u60a3\uff0c\u7279\u306b\u5927\u52d5\u8108\u7624\u3084\u52d5\u8108\u786c\u5316\u306a\u3069\u3092\u60a3\u3046\u9ad8\u9f62\u8005\u304c\u5897\u3048\u3066\u304d\u3066\u3044\u308b\uff0e\u3053\u308c\u3089\u306e\u75be\u60a3\u306f\u81ea\u899a\u75c7\u72b6\u304c\u51fa\u3066\u7d20\u65e9\u304f\u51e6\u7f6e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3068\u306a\u308b\uff0e\u305d\u3053\u3067\u672c\u7814\u7a76\u3067\u306f\uff0e\u5927\u52d5\u8108\u7624\u304a\u3088\u3073\u52d5\u8108\u786c\u5316\u306eCT\u753b\u50cf\u304b\u3089\u8840\u7ba1\u306e\u30e2\u30c7\u30eb\u5316\uff0c\u8840\u6d41\u89e3\u6790\uff0c\u89e3\u6790\u7d50\u679c\u306b\u3088\u308b\u8a3a\u65ad\u307e\u3067\u3092\u7d20\u65e9\u304f\u30b9\u30e0\u30fc\u30ba\u306b\u884c\u3046\u305f\u3081\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u3092\u884c\u3063\u3066\u3044\u308b\uff0e\u89e3\u6790\u306b\u306f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u2015\uff08OpenFoam\uff0cElmer\u7b49\uff09\u3092\u4e3b\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308b\u7d4c\u8cbb\u306e\u524a\u6e1b\u3082\u8996\u91ce\u306b\u5165\u3063\u3066\u3044\u308b\uff0e\u7279\u306b\uff0c\u6d41\u4f53\u3068\u8840\u7ba1\u69cb\u9020\u5909\u5316\u306e\u6d41\u4f53\u30fc\u69cb\u9020\u9023\u6210\u89e3\u6790\uff08FSI\u89e3\u6790\uff09\u3092\u884c\u3046\u3053\u3068\u306b\u3088\u308a\uff0c\u3088\u308a\u9ad8\u7cbe\u5ea6\u306e\u8a3a\u65ad\u306b\u5f79\u7acb\u3066\u308b\u3053\u3068\u3092\u76ee\u6307\u3057\u3066\u3044\u308b.
\nDue to the aging of society, the number of elderly people suffering from vascular diseases, especially aortic aneurysms and arteriosclerosis, are increasing. It is important to treat these diseases promptly with subjective symptoms. Therefore, in this study, we are constructing a system that can quickly and smoothly diagnose aortic aneurysm and arteriosclerosis, through blood vessel modeling, blood flow analysis based on medical CT images. We are also considering cost reduction by mainly using open source software (OpenFoam, Elmer, etc.) for analysis. In particular, we aim to use it for more accurate diagnosis by performing fluid-structure coupled analysis (FSI analysis) of fluid and vascular structural changes.<\/p>\n

(7)\u6a5f\u68b0\u5b66\u7fd2\u3092\u7528\u3044\u305f\u5851\u6027\u52a0\u5de5\u4e0d\u5177\u5408\u540c\u5b9a\u30b7\u30b9\u30c6\u30e0\u306e\u958b\u767a
\nDevelopment of plastic working defect identification system using machine learning<\/h3>\n

\u935b\u9020\u306f\u77ed\u6642\u9593\u306b\u591a\u304f\u306e\u88fd\u54c1\u3092\u4f5c\u88fd\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304b\u3089\u7523\u696d\u754c\u3067\u5e83\u304f\u884c\u308f\u308c\u3066\u3044\u308b\uff0e\u3057\u304b\u3057\uff0c\u578b\u306e\u4e0d\u5177\u5408\u306a\u3069\u304b\u3089\u4e0d\u826f\u54c1\u304c\u767a\u751f\u3059\u308b\u3068\u5927\u640d\u5bb3\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\uff0e\u3053\u306e\u305f\u3081\uff0c\u4e0d\u826f\u54c1\u767a\u751f\u3092\u4f5c\u696d\u4e2d\u306b\u4e88\u3081\u4e88\u6e2c\u3067\u304d\u308c\u3070\u4e0d\u826f\u54c1\u306e\u767a\u751f\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3068\u306a\u308b\uff0e\u305d\u3053\u3067\u672c\u7814\u7a76\u3067\u306f\uff0c\u6a5f\u68b0\u5b66\u7fd2\u3092\u7528\u3044\u305f\u935b\u9020\u6642\u306e\u4e0d\u826f\u54c1\u4e88\u6e2c\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u3092\u884c\u3046\uff0e\u307e\u305f\uff0c\u540c\u6642\u306b\u30d0\u30ea\u306e\u767a\u751f\u4e88\u6e2c\u3082\u884c\u3044\uff0c\u30d0\u30ea\u767a\u751f\u3068\u4e0d\u826f\u54c1\u3068\u306e\u76f8\u4e92\u95a2\u4fc2\u306b\u3064\u3044\u3066\u3082\u691c\u8a0e\u3059\u308b\uff0e
\nForging is widely used in the industrial world because many products can be produced in a short amount of time. However, if there is a defect in the mold, it lead a large number of defective products. Therefore, if this defect can be predicted in advance during the forging process, the number of defective products can be minimized. Therefore, in this research, we constructed a defective product prediction system during forging using machine learning (ML). At the same time, the occurrence of burrs is predicted, and the interrelationship between the occurrence of burrs and defective products was also examined.<\/p>\n

(8) \u81e8\u5e8a\u5fdc\u7528\u3092\u76ee\u7684\u3068\u3057\u305f\u819d\u95a2\u7bc0\u5b89\u5b9a\u6027\u306b\u95a2\u3059\u308b\u7814\u7a76
\nResearch on knee joint stability for clinical application<\/h3>\n

\u819d\u306f\u4f53\u5185\u3067\u6700\u3082\u8ca0\u8377\u304c\u304b\u304b\u308a\uff0c\u640d\u50b7\u3057\u3084\u3059\u3044\u95a2\u7bc0\u3067\u3042\u308b\uff0e\u30b9\u30dd\u30fc\u30c4\u3084\u602a\u6211\u306b\u3088\u308b\u529b\u5b66\u7684\u306a\u7570\u5e38\u306f\u5909\u5f62\u6027\u95a2\u7bc0\u75c7\uff08OA\uff09\u7b49\u306e\u6162\u6027\u75be\u60a3\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\uff0e\u305d\u306e\u305f\u3081\uff0c\u65b0\u305f\u306a\u6cbb\u7642\u6cd5\u306e\u958b\u767a\u306f\uff0c\u751f\u4f53\u5de5\u5b66\u304a\u3088\u3073\u6574\u5f62\u5916\u79d1\u306e\u5206\u91ce\u3067\u5927\u304d\u306a\u8ab2\u984c\u3068\u306a\u3063\u3066\u3044\u308b\uff0e\u5b9a\u91cf\u7684\u306b\u819d\u95a2\u7bc0\u306e\u529b\u5b66\u7279\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u306f\uff0c\u95a2\u7bc0\u5185\u306e\u5404\u7d44\u7e54\u306e\u5f79\u5272\u3092\u77e5\u308b\u4e0a\u3067\u6975\u3081\u3066\u91cd\u8981\u306a\u9805\u76ee\u3067\u3042\u308b\uff0e\u3057\u305f\u304c\u3063\u3066\uff0c\u672c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u76ee\u7684\u306f\uff0c\u819d\u95a2\u7bc0\u306e\u529b\u5b66\u7684\u7279\u6027\u3092\u5b9a\u91cf\u7684\u306b\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u65b0\u6280\u8853\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u3067\u3042\u308b\uff0e
\nThe knee is the most stressed and vulnerable joint in the body. Mechanical abnormalities due to sports and injuries are likely to lead to chronic illnesses such as osteoarthritis (OA). Therefore, the development of new treatments has become a major issue in the fields of bioengineering and orthopedics. Quantitative measurement of the mechanical properties of the knee joint is an extremely important criterion for understanding the role of each tissue in the joint. Therefore, the purpose of this project is to develop a new technique for quantitatively evaluating the mechanical properties of the knee joint.<\/p>\n","protected":false},"excerpt":{"rendered":"

(1) \u6700\u9069\u5316\u6280\u8853\u306e\u958b\u767a\uff1a\u907a\u4f1d\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff0c\u5b9f\u9a13\u8a08\u753b\u6cd5\uff0c\u591a\u76ee\u7684\u6700\u9069\u5316\u306a\u3069\u6700\u9069\u5316\u6280\u8853\u958b\u767a\u3068\u6700\u9069\u5316\u30d7\u30ed\u30b0\u30e9\u30e0\u958b\u767a Development of optimization technology: Development of … <\/p>\n

“Our Research” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/pages\/32"}],"collection":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":14,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/pages\/32\/revisions"}],"predecessor-version":[{"id":192,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/pages\/32\/revisions\/192"}],"wp:attachment":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/ldc.eng\/Root\/wp-json\/wp\/v2\/media?parent=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}