Time-temperature superposition principle for the shear fracture behaviour of soft adhesive layers: From bulk to interface. (September 2022)

• Record Type: Journal Article
• Authors: Xia, Yan; Zhu, Zhongmeng; Yang, Zhuoran; Sun, Taolin; Yao, Chengbin; Jiang, Han
• Is Part Of: International journal of adhesion & adhesives. Volume 117:Part A(2022)
• Publication Date: 2022-09
• Subjects: Soft adhesive layer -- Time-temperature superposition principle -- Shear fracture behaviour -- Loading rate/temperature dependence; Adhesion -- Periodicals; Adhesives -- Periodicals; Adhésion (Physique) -- Périodiques; Adhésifs -- Périodiques; Adhesie; Kleefstoffen; Adhesion; Adhesives; Periodicals; 668.3
• DOI: 10.1016/j.ijadhadh.2022.103180
• Languages: English
• ISSNs: 0143-7496

Abstract

Abstract: Soft adhesive layers have attracted great attention as a commonly used adhesive technique, particularly because of their shear fracture behaviour at extreme loading rates and temperatures. Therefore, the present study examined the shear fracture properties of a soft adhesive layer through systematic rheological experiments, loading-unloading shear tests and shear fracture tests. Due to a similar viscoelastic characteristic in rheological properties and fracture properties, the time-temperature superposition principle (TTSP) was extended from the bulk to the interface to investigate its shear cohesive failure. A shear fracture toughness master curve was defined using the time-temperature equivalence shift factors derived from the rheological properties. The shear fracture behaviour of the soft adhesive layer could be predicted using data from a narrow range of loading rates/temperatures. The results demonstrated the potential of extending the TTSP approach from the bulk to a soft adhesive layer having viscoelastic character, which might be utilised to predict the shear fracture toughness of soft adhesive materials under extreme conditions.