Skip to main content

Research Repository

Advanced Search

Determining equivalent-sectional shear modulus in torsion tests for laminated glass beams using photogrammetry method

Uheida, Kal; Deng, Yu; Zhang, Hexin; Galuppi, Laura; Gao, Jiaxiang; Li, Xie; Huang, Shuge; Qin, Xuanshen; Wong, Simon H F; Guo, Jianwen; Zhang, Guangxin; Mohamed, Ahmed


Yu Deng

Laura Galuppi

Jiaxiang Gao

Xie Li

Shuge Huang

Xuanshen Qin

Simon H F Wong

Jianwen Guo

Guangxin Zhang


This paper proposes a concise concept for quantifying the shear/torsional stiffness of the laminated glass beams experimentally by introducing the Equivalent-Sectional Shear Modulus (ESSM), that is directly measured from the torque and sectional-rotation correlation with the torsion test and tailor-made photogrammetry technique. The advantage of this method is originated from the concept of measuring the overall rotation to torque response of a laminated glass beam altogether rather than the component individually. This eliminates the uncertainties of analytical approximations that are commonly adopted by most existing methods in which the composite shear/torsion stiffness is derived from its component mechanical properties. The photogrammetry technique increased the accuracy of the sectional rotation measurement by acquiring dense displacement sample points on the glass beam simultaneously. The accuracy of the photogrammetry setup and efficacy of the test design were proven by a micrometre and a monolithic glass beam test. One sample each for the polyvinyl butyral (PVB) and SentryGlas Plus (SGP) laminated glass beams were tested multiple times non-destructively to determine the ESSM. The result of the SGP laminated glass beam showed a closer agreement with the previous studies, however the result of the PVB laminated glass beam exhibited a larger difference from the previous studies. It also suggested that mechanical properties of the interlayer played an important role in the composite behaviour of the laminated glass beam. The experimental outcomes have demonstrated the proposed method is an accurate and effective technique for measuring the ESSM of laminated glass beams.


Uheida, K., Deng, Y., Zhang, H., Galuppi, L., Gao, J., Li, X., …Mohamed, A. (2021). Determining equivalent-sectional shear modulus in torsion tests for laminated glass beams using photogrammetry method. Composite Structures, 276, Article 114572.

Journal Article Type Article
Acceptance Date Aug 13, 2021
Online Publication Date Aug 18, 2021
Publication Date 2021-11
Deposit Date Aug 13, 2021
Publicly Available Date Aug 19, 2022
Print ISSN 0263-8223
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 276
Article Number 114572
Keywords Laminated glass beam, Equivalent-sectional shear modulus, Glass beam torsion test, Photogrammetry method for glass structures
Public URL


Determining Equivalent-sectional Shear Modulus In Torsion Tests For Laminated Glass Beams Using Photogrammetry Method (accepted version) (2.2 Mb)


Copyright Statement
Accepted version licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license.

You might also like

Downloadable Citations