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<p>Previous research has shown that the adhesion between Polyvinyl Butyral (PVB) interlayers and glass plies is a key energy absorbing mechanism in blast resistant glazing systems. Both the work done in overcoming the bond at the PVB-glass interface and the stretching of PVB between glass fragments contribute to the post-fracture resistance of glass panes. To support the future development of numerical models that capture adhesion, interlayer stiffness, and delamination behaviour, a structured series of instrumented through-crack tensile (TCT) tests on laminated glass samples incorporating PVB types of differing adhesion levels (B100MR, V108, HR100) and thicknesses (0.76&#xa0;mm and 1.52&#xa0;mm) at actuator speeds between 1&#xa0;m/s and 5&#xa0;m/s were conducted. Additionally, similarly instrumented uniaxial tensile tests were undertaken on PVB-only samples. Complementary uniaxial tensile tests were also undertaken on PVB-only samples, and compressive shear strength (CSS) and pummel test results were obtained through Kuraray’s Performance Monitoring Program.</p><p>The aim of this study is to generate a controlled, repeatable dataset suitable for the calibration of engineering numerical models, particularly bilinear traction–separation laws used to simulate glass–PVB delamination in blast and impact analyses. The results demonstrate clear relationships between adhesion level, interlayer thickness, strain rate and the likelihood of achieving progressive delamination under TCT loading. HR100 exhibited negligible delamination at all rates, whereas B100MR and V108 showed ductile behaviour except for thin (0.76&#xa0;mm) interlayers tested at 5&#xa0;m/s. These findings indicate that adhesion level strongly governs whether delamination occurs, while the force measured in samples during delamination is influenced by the interaction between stiffness, thickness and adhesion.</p><p>The dataset provides a structured experimental basis for future development and calibration of traction–separation models and offers insights into the engineering relevance, and limits, of CSS values in predicting high-rate delamination behaviour.</p>

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Through crack tensile testing of PVB-laminated glass with varying interlayer adhesion at elevated strain rates

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Luke Pascoe,
  • Jessica Klimenko,
  • Daniel Aggromito

摘要

Previous research has shown that the adhesion between Polyvinyl Butyral (PVB) interlayers and glass plies is a key energy absorbing mechanism in blast resistant glazing systems. Both the work done in overcoming the bond at the PVB-glass interface and the stretching of PVB between glass fragments contribute to the post-fracture resistance of glass panes. To support the future development of numerical models that capture adhesion, interlayer stiffness, and delamination behaviour, a structured series of instrumented through-crack tensile (TCT) tests on laminated glass samples incorporating PVB types of differing adhesion levels (B100MR, V108, HR100) and thicknesses (0.76 mm and 1.52 mm) at actuator speeds between 1 m/s and 5 m/s were conducted. Additionally, similarly instrumented uniaxial tensile tests were undertaken on PVB-only samples. Complementary uniaxial tensile tests were also undertaken on PVB-only samples, and compressive shear strength (CSS) and pummel test results were obtained through Kuraray’s Performance Monitoring Program.

The aim of this study is to generate a controlled, repeatable dataset suitable for the calibration of engineering numerical models, particularly bilinear traction–separation laws used to simulate glass–PVB delamination in blast and impact analyses. The results demonstrate clear relationships between adhesion level, interlayer thickness, strain rate and the likelihood of achieving progressive delamination under TCT loading. HR100 exhibited negligible delamination at all rates, whereas B100MR and V108 showed ductile behaviour except for thin (0.76 mm) interlayers tested at 5 m/s. These findings indicate that adhesion level strongly governs whether delamination occurs, while the force measured in samples during delamination is influenced by the interaction between stiffness, thickness and adhesion.

The dataset provides a structured experimental basis for future development and calibration of traction–separation models and offers insights into the engineering relevance, and limits, of CSS values in predicting high-rate delamination behaviour.