Characterization of Material Stiffness on Injection Moulded Microspecimens Using Different Test Methods
Characterization of Material Stiffness on Injection Moulded Microspecimens Using Different Test Methods
复制标题
使用不同测试方法表征注塑微型样品的材料刚度
DOI：
10.1155/2014/769206
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发表时间：
2014
影响因子：
--
通讯作者：
S. Meister
中科院分区：
文献类型：
--
作者：
D. Drummer;A. Seefried;S. Meister
聚合物微部件的注射成型可以导致由于过程引起的内部性能的变化而改变材料的行为。因此，在标准化试样上确定和有效的微观部件中机械材料性能的转移只是部分可能的，应该在微试样上进行验证。本文研究了拉伸和弯曲两种测试方法，以适当地表征聚合物微部件的材料刚度。为此，使用缩小尺寸的标准试样，并采用不同的测试方法进行测试。研究表明，不同的测试方法导致了相似的力学值。在所研究的测试方法中，可以观察到过程诱导的力学行为改变的影响。因此，微弯曲试验可能是使用微试样表征材料刚度的合适方法。
Injection moulding of polymer microparts can result in modified material behaviour due to process-induced changes in the internal properties. Thus, a transfer of the mechanical material properties in microparts, determined and valid on standardized test specimens, is only partially possible and should be verified on microtest specimens. This paper investigates both tensile and bending test methods for a suitable characterization of material stiffness in polymer microparts. For this purpose a down-scaled standard specimen is used and tested with different testing methods. The investigations reveal that the different testing methods result in comparable mechanical values. The effects of process-induced modified mechanical behaviour are observable in the investigated testing methods. Consequently, a microbending test is potentially a suitable method for characterizing material stiffness using microspecimens.
注塑微型零件的长期性能：零件尺寸和冷却条件对老化行为的影响
影响因子：
3.9
作者：
Drummer;Jungmeier;Meister
通讯作者：
Meister