Extracting Jc Based Upon Factor; a Challenge for Single Specimen Testing of Elastomers
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
WMECH04_028
تاریخ نمایه سازی: 11 خرداد 1397
Abstract:
This study is on the use of J-integral approach for fracture toughness testing of elastomeric materials. At themoment, multiple specimen test method is the most commonly used method for elastomeric materials. However, thistest method requires a large number of samples to be tested, and it is costly and time-consuming. Single specimenmethod has the advantage that there is no need to test many samples but there is a lack of adequate research in thisfield. The main challenge with this method is how to extract the factor. Few previous studies for determination of indicate that it is merely geometry dependent like metals. In this Research, the selected specimen geometry is a doubleedge-notched tension (DENT) sample, which is a very popular sample. In contrast to the previous investigations, bothour experimental and numerical results show that extracted values are completely dependent on the material and theloading level along with the geometry. Also, It is shown that the constant * claimed for the DENT specimen in theliterature is not correct and there is a variation of 42% relative to the type of material.
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Authors
A.R Shahani
Professor, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, ۱۹۳۹۵-۱۹۹۹, Tehran, Iran
M Baghaee
MSc Student, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, ۱۹۳۹۵-۱۹۹۹, Tehran, Iran
H Shooshtar
Ph.D. Student, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, ۱۹۳۹۵-۱۹۹۹, Tehran, Iran