کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
807494 1468317 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of KI in orthotropic laminates with double ended cracks using a single strain gage technique
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Determination of KI in orthotropic laminates with double ended cracks using a single strain gage technique
چکیده انگلیسی


• A strain gage method for finding KI of internal cracked composite panel is proposed.
• The existence and importance of optimal gage locations is demonstrated.
• The effect of gage orientation on the measured KI is demonstrated.

Experimental determination of mode I stress intensity factor (SIF) KIKI in orthotropic composites is of significant importance. In this direction, single strain gage techniques that are developed for measurement of KIKI are based on the solutions of the single ended crack theories and those have also been tested only for single ended cracked orthotropic configurations. Although, certain limitations prevent straight forward application of these single ended crack solutions to the double ended configurations, the present investigation aims at demonstrating the use of such a single strain gage technique recently proposed by the authors to the configurations containing double ended cracks or internal cracks in orthotropic materials for the accurate measurement of KIKI. Importantly, the present investigation also proposes existence and determination of optimal strain gage locations in double ended cracked orthotropic plates for the accurate measurement of KIKI. Studies have also been carried out to understand the effect of change in geometry of the configuration on the optimal gage locations. The results of the present investigation have been observed to substantiate the theoretical formulations in terms of accurate determination of KIKI. Numerical results clearly show that the proposed single strain gage technique yields accurate values of KIKI when the gage is placed at an optimal gage location. On the contrary, highly erroneous values of KIKI are obtained when the gage is placed at non-optimal locations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 82, April 2016, Pages 96–106
نویسندگان
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