Experimental and numerical evaluations on the effects of adhesive fillet, overlap length and unbonded area in adhesive‐bonded joints

• DOI: 10.1111/ffe.13294
• Publication Date: 2020-07-09T01:31:01Z
• Authors: Guanghan Wu; Dayong Li; Wei‐Jen Lai; Qiuren Chen; Yandong Shi; Li Huang; Shiyao Huang; Hongtae Kang; Yinghong Peng; Xuming Su
• Keywords: Fillet (mechanics); Paris' law

Abstract To realize robust structural design, the effects of adhesive fillet, overlap length and unbonded area in adhesive‐bonded joints need to be fully understood incorporated into a fatigue life estimation method. In present work, both static experiments are performed on six types illuminate these systematically. A straightforward total evaluation method is proposed address effects. statistical crack initiation model established based data bulk specimens. Growth calculated using interfacial mixed mode growth Good correlation observed between experimental lives. Furthermore, analysed results. Results indicate that fillet postpones by reducing local strain level, change length. Besides, promotes fraction II energy release rate total, rates extending life.