کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7177381 1467025 2018 47 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spontaneous buckling-driven periodic delamination of thin films on soft substrates under large compression
ترجمه فارسی عنوان
نفوذی دوره ای از فیلم های نازک بر روی بستر های نرم تحت فشرده سازی بزرگ، خود به خودی
کلمات کلیدی
سیستم فیلم سوبسترا، طوفان دوره ای، پس از خم شدن، سختی مواجهه، کشش پذیری،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Through a combination of experiments, theoretical modeling, and finite element simulation, we explore the mechanics governing the formation and evolution of periodic buckle-delamination on both micro- and macro-scale by bonding a thin film to an extremely pre-strained soft elastomeric substrate over 400%. We find that upon the large substrate pre-strain release, the deformation in the film follows a three-stage deformation regime, i.e. onset of localized blisters (Stage I), growth through delamination crack propagation to form periodic sinusoidal blisters (Stage II), and transition to post-buckled jig-saw-like blisters under fixed-end compression after crack arrest (Stage III). Related energy-based mechanics models on predicting the evolution and geometry of periodic blisters under moderate and large compression are developed and validated through both experiments and finite element simulation. Finally, we discuss the potential applications of harnessing spontaneous buckle-delamination for interfacial toughness measurement through the metrology of blisters, as well as design of extremely stretchable electronics by achieving an extremely lower value of maximum tensile strain in the buckle-delaminated film.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanics and Physics of Solids - Volume 118, September 2018, Pages 40-57
نویسندگان
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