Jsme International Journal Series A-solid Mechanics and Material Engineering最新文献_第4页

Experimental and Analytical Characterization of β-Tricalcium Phosphate Particle Reinforced Poly-L-Lactide Composites β-磷酸三钙颗粒增强聚l -丙交酯复合材料的实验与分析表征

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-07-15 DOI: 10.1299/JSMEA.49.314

Satoshi Kobayashi, Kazuki Sakamoto

{"title":"Experimental and Analytical Characterization of β-Tricalcium Phosphate Particle Reinforced Poly-L-Lactide Composites","authors":"Satoshi Kobayashi, Kazuki Sakamoto","doi":"10.1299/JSMEA.49.314","DOIUrl":"https://doi.org/10.1299/JSMEA.49.314","url":null,"abstract":"Bioactive ceramics, β-tricalcium phosphate (β-TCP), particles reinforced bioabsorbable plastics poly-L lactide (PLLA) composites have been expected to apply for the fracture fixations which have more biocompatibility than monolithic PLLA. In this study, β-TCP/PLLA composites containing three different β-TCP contents (4.8, 9.5, 14.3wt%) were prepared by injection molding. The results of bending tests show bending strength decreases with increasing β-TCP contents. On the other hand, bending modulus increases with increasing β-TCP contents. After immersion tests in PBS at 37°C up to 8 weeks, the mechanical properties were hardly degraded in all specimens. The results of fracture surface observation by scanning electron microscopy indicated that microscopic damage such as debonding between β-TCP and PLLA initiates at β-TCP agglomeration and grows with increasing loading. Analytical predictions of the relationship between stress and strain based on micromechanics considering the progress of debonding between β-TCP and PLLA were in good agreement with experimental results.","PeriodicalId":170519,"journal":{"name":"Jsme International Journal Series A-solid Mechanics and Material Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125989001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Approach to Analysis of Mechanical Behavior of Textile Composites by Inclusion Element Method 包合元法分析纺织复合材料力学性能的探讨

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-07-15 DOI: 10.1299/JSMEA.49.418

T. Tsujikami, T. Horikawa, Satoru Hirosawa, M. Zako

引用次数: 3

Gigacycle Fatigue Properties of V-Added Steel with an Application of Modified Ausforming 加v钢的千兆周疲劳性能及其改进的应用

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-07-15 DOI: 10.1299/JSMEA.49.337

H. Hirukawa, Y. Furuya, S. Matsuoka

{"title":"Gigacycle Fatigue Properties of V-Added Steel with an Application of Modified Ausforming","authors":"H. Hirukawa, Y. Furuya, S. Matsuoka","doi":"10.1299/JSMEA.49.337","DOIUrl":"https://doi.org/10.1299/JSMEA.49.337","url":null,"abstract":"This report reveals gigacycle fatigue properties for a modified-ausformed V-added steel with the chemical composition of 0.3C-0.3Si-1.0Cr-0.7Mo-0.3V in mass %. Modified-ausformed and oil-quenched steels were prepared for fatigue tests, followed by tempering at 400°C and 600°C. The tensile strengths of the 600°C tempered steels were almost equal to those of the 400°C tempered versions because of secondary hardening due to fine precipitation of vanadium carbides. The fatigue properties of the 600°C tempered version of oil-quenched steel (QT600) showed little difference from the 400°C tempered version (QT400) in spite of the fine precipitation of vanadium carbides. The modified-ausformed steels (AF400 and AF600) revealed higher fatigue limits at 5× 109 cycles than the oil-quenched versions (QT400 and QT600), although the difference between AF400 and AF600 was small. The remarkable difference between AF400 and AF600 was fatigue strengths at around 106 cycles, i.e. the fatigue strength of AF600 at those cycles was higher than that of AF400. Based on the above results, the effect of the fine precipitation of vanadium carbides was small on the gigacycle fatigue properties, while modified-ausforming could improve those properties. On the other hand, the multiple effects of the fine precipitation and modified-ausforming was large on the fatigue strength at around 106 cycles.","PeriodicalId":170519,"journal":{"name":"Jsme International Journal Series A-solid Mechanics and Material Engineering","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124339704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Synthesis and Characterization of SiC Ceramics for High Temperature Resistant Coatings and Matrix 耐高温涂层和基体用SiC陶瓷的合成与表征

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.237

H. Watanabe, Satoshi Kobayashi, M. Fukushima, S. Wakayama

引用次数: 0

Nonlinear Dynamic Bending and Domain Wall Motion in Functionally Graded Piezoelectric Actuators under AC Electric Fields: Simulation and Experiment 交流电场作用下功能梯度压电驱动器的非线性动态弯曲和畴壁运动:仿真与实验

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.188

Y. Shindo, F. Narita, M. Mikami, Fumitoshi Saito

引用次数: 21

Photodiode Camera Measurement of Surface Strains on Tendons during Multiple Cyclic Tests 多次循环试验中肌腱表面应变的光电二极管相机测量

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.282

K. Chun, R. Hubbard

{"title":"Photodiode Camera Measurement of Surface Strains on Tendons during Multiple Cyclic Tests","authors":"K. Chun, R. Hubbard","doi":"10.1299/JSMEA.49.282","DOIUrl":"https://doi.org/10.1299/JSMEA.49.282","url":null,"abstract":"The objectives of this study are to introduce the use of a photodiode camera for measuring surface strain on soft tissue and to present some representative responses of the tendon. Tendon specimens were obtained from the hindlimbs of canines and frozen to -70°C. After thawing, specimens were mounted in the immersion bath at a room temperature (22°C), preloaded to 0.13N and then subjected to 3% of the initial length at a strain rate of 2%/sec. In tendons which were tested in two blocks of seven repeated extensions to 3% strain with a 120 seconds wait period between, the surface strains were measured with a photodiode camera and near the gripped ends generally were greater than the surface strains in the middle segment of the tendon specimens. The recovery for peak load after the rest period was consistent but the changes in patterns of surface strains after the rest period were not consistent. The advantages of a photodiode measurement of surface strains include the followings: 1) it is a noncontacting method which eliminates errors and distortions caused by clip gauges or mechanical/electronic transducers; 2) it is more accurate than previous noncontact methods, e.g. the VDA and the high speed photographic method; 3) it is a fully automatic, thus reducing labor for replaying video tapes or films and potential errors from human judgement which can occur during digitizing data from photographs. Because the photodiode camera, employs a solid state photodiode array to sense black and white images, scan targets (black image) on the surface of the tendon specimen and back lighting system (white image), and stored automatically image data for surface strains of the tendon specimen on the computer during cyclic extensions.","PeriodicalId":170519,"journal":{"name":"Jsme International Journal Series A-solid Mechanics and Material Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132144145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Ferroelectric Properties of Piezoelectric Ceramics Based on Crystallographic Homogenization Method and Crystal Orientation Analysis by SEM·EBSD Technique 基于晶体均质法和SEM·EBSD技术的压电陶瓷铁电性能评价

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.209

Y. Uetsuji, Toshihiro Yoshida, T. Yamakawa, K. Tsuchiya, S. Ueda, E. Nakamachi

引用次数: 5

Fabrication of Smart Material PZT Thin Films by RF Magnetron Sputtering Method in Micro Actuators

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.201

K. Tsuchiya, T. Kitagawa, Y. Uetsuji, E. Nakamachi

{"title":"Fabrication of Smart Material PZT Thin Films by RF Magnetron Sputtering Method in Micro Actuators","authors":"K. Tsuchiya, T. Kitagawa, Y. Uetsuji, E. Nakamachi","doi":"10.1299/JSMEA.49.201","DOIUrl":"https://doi.org/10.1299/JSMEA.49.201","url":null,"abstract":"PZT piezoelectric thin films can be promising candidates for microactuators or microsensors in MEMS (Micro Electro Mechanical Systems) or NEMS (Nano Electro Mechanical Systems) because of the quick response. In this research, the RF magnetron sputtering method is used for PZT thin films deposition. The sputtering conditions to control the crystalline plane (111) of perovskite structure for PZT to influence the piezoelectric constant can be proposed. Those sputtering conditions such as substrate angle and temperature, Ar/O2 pressure and flow rate were investigated by the heuristic and experimental design method to fabricate optimum PZT perovskite crystal thin film. The condition of substrate temperature was the most important factor to improve piezoelectric constant. The crystalline structure, surface topography and piezoelectric constant of the deposited PZT were observed by X-ray diffraction structural analysis, atomic force microscope and piezoelectric constant evaluation equipment. PZT thin films with only perovskite structure were obtained. PZT (111) was grown with the increase in substrate temperature, and the piezoelectric property was improved. The elastic modulus of 70GPa for the deposited PZT found a good agreement with the quoted value for commercial based bulk PZT. We obtained a piezoelectric constant d31=-28pm/V and a high performance of bimorph actuator.","PeriodicalId":170519,"journal":{"name":"Jsme International Journal Series A-solid Mechanics and Material Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131070345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Theoretical Investigation on the Contact Duration in Elastic and Inelastic Collision of a Circular Plate to a Planar Surface 圆板与平面弹性与非弹性碰撞接触时间的理论研究

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.258

Zhong-Lan Lu, Koichi Tanaka, M. Nishida, F. Huang

引用次数: 5

Non-Contact Evaluation for Articular Cartilage Using Ultrasound 超声对关节软骨的非接触评价

Jsme International Journal Series A-solid Mechanics and Material Engineering Pub Date : 2006-04-15 DOI: 10.1299/JSMEA.49.242

K. Mori, Y. Nakagawa, H. Kuroki, Keisuke Nakashima, K. Ikeuchi, T. Mine, Takashi Nakamura, S. Kawai, Takashi Saito

{"title":"Non-Contact Evaluation for Articular Cartilage Using Ultrasound","authors":"K. Mori, Y. Nakagawa, H. Kuroki, Keisuke Nakashima, K. Ikeuchi, T. Mine, Takashi Nakamura, S. Kawai, Takashi Saito","doi":"10.1299/JSMEA.49.242","DOIUrl":"https://doi.org/10.1299/JSMEA.49.242","url":null,"abstract":"In orthopedic field, various new treatments of articular cartilage defect, for example autogenous osteochondral grafts, have been developed. With the spread of these treatments, orthopedists began to focus on the mechanical properties of recovered articular cartilage. The quantitative evaluation of articular cartilage before and after these treatments gives orthopedists the important information to improve these treatments and develop new treatments. We have been investigating the non-contact ultrasonic evaluation for articular cartilage under arthroscopy. In this paper, it was hypothesized that the ultrasonic evaluation depended on the collagen fiber in cartilage. The enzymatically degradation of collagen fiber in cartilage surface was performed. The effect of the degradation on sound velocity, attenuation coefficient and signal intensity, which is the index of cartilage stiffness calculated from the proposed method, was measured. The numerical analysis was performed to clear the relation between the cartilage character and ultrasonic parameters. Experimental and numerical results suggest that the present method can be expanded the sensitive evaluation for cartilage disease in clinical field.","PeriodicalId":170519,"journal":{"name":"Jsme International Journal Series A-solid Mechanics and Material Engineering","volume":"43 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132501310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6