کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775117 1463128 2013 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation in mode II dominated interface fracture of stainless steel–epoxy bonds. Part 2: Multi-scale damage analysis
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Variation in mode II dominated interface fracture of stainless steel–epoxy bonds. Part 2: Multi-scale damage analysis
چکیده انگلیسی

The fracture at stainless steel–epoxy interfaces is investigated using acoustic emission (AE), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The effects of substrate morphology and aging on the interface are traced. Narrow grooves at the grain boundaries of steel introduce submicron-scale mechanical interlocking and result in high toughness. Sharp ridges after nitric acid etching introduce secondary cracking but may initiate interface collapse. The tough fracture process induced negligible AE. Short-term aging of an interphase region causes diminished secondary cracking and the mechanical interlocking to malfunction.


► We characterize interface fracture from both morphology and elemental point of view.
► Mode II dominated interface fracture is initiated by mode I failure on a microscale.
► Grooves and ridges result in a toughening effect via interfacial damage of epoxy.
► Short-term aging of AISI 304-epoxy interface leads to interphasial embrittlement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 97, January 2013, Pages 244–260
نویسندگان
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