Development of Small Fatigue Testing Machine for Film Materials.
Development of Small Fatigue Testing Machine for Film Materials.
复制标题
薄膜材料小型疲劳试验机的研制。
DOI：
10.1299/kikaia.68.801
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
T. Ogata
中科院分区：
文献类型：
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作者：
M. Arai;T. Ogata
在工业领域中，检测薄膜等小材料的机械和疲劳寿命特性是非常重要的。针对这种小颗粒材料，研制了多种测试设备和测试方法。例如，有简单紧凑的拉伸测试设备，使用直流电机作为致动器，还有微型压痕仪，通过在表面上推动金刚石压痕仪来测量材料特性。然而，通过上述试验机仍难以进行具有三角波等复杂波的疲劳试验。在本研究中，作为测定小型材料的抗拉强度和疲劳寿命特性的试验，制作了将压电陶瓷用作致动器的小型疲劳试验装置。通过试验，发现所研制的小型疲劳试验机对小试件是有效的。结果表明，我们的薄膜材料的屈服应力和拉伸强度远高于我们之前测试的SUS304块体材料。疲劳寿命也远高于散装。
It is very important in the industrial field to examine mechanical and fatigue life properties of small materials such as thin films. Some kinds of test equipment and methods for such small material have been developed. For example, there are simple and compact tensile testing devices that use a DC motor as the actuator, and also micro indentators, which measure material properties by pushing a diamond indentator on the surface. However, it is still difficult to conduct a fatigue test with complex waves like a triangle wave by the above testers. In this study, a small fatigue testing device, in which a piezo electric ceramic is applied as the actuator, was produced as a trial for measuring a tensile strength and fatigue life properties of a small material. Through our tests, it was found that the small fatigue testor which was developed here is effective for small specimens. Results showed that a yield stress and tensile strength for our film material was much higher than for SUS304 bulk material, which we had tested previously. The fatigue life was also much higher than for the bulk.