Journal of Shanghai Jiaotong University ›› 2020, Vol. 54 ›› Issue (3): 227-238.doi: 10.16183/j.cnki.jsjtu.2020.03.002

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Post-Breakage Strength of Laminated Glass Panel Cracked by Impact

LIU Xinwei 1,2,3,YANG Jian 1,2,3,WANG Xinger 1,2,3,LIU Qiang 4   

  1. 1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China; 3. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 4. China Academy of Building Research, Beijing 100013, China
  • Online:2020-03-28 Published:2020-04-09

Abstract: In this paper, different glass configurations using annealed glass (ANG) and fully tempered glass (FTG) as well as different interlayer combinations were introduced. Fifteen laminated glass (LG) panels in five groups cracked by impact were statically tested. Through analyzing the load-displacement relationship, the effects due to the crack pattern and interlayer type on the post-breakage performance were examined. The results show that the crack pattern of inner glass dominates the load bearing mechanism of LG. Compared to FTG, ANG can produce beneficial crack pattern and generate better load transferring path to retain greater strength. Compared to inner FTG, an increase of 46.5% in post-breakage strength can be found when using inner ANG. The static resistance of LG using hybrid SentryGlas@Plus (SGP)/polyvinyl butyral(PVB)is only 37% of that uses double SGP interlayers. However, the LG using double SGP interlayers has the failure mode of central penetration which presents brittle characteristics and is unfavorable in engineering practice. The LG using hybrid SGP/PVB shows greater ductility while the interlayer can fully function.

Key words: laminated glass, post-breakage strength, crack pattern, SentryGlas@Plus(SGP) interlayer, impact failure, static load test

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