Outputs (12)

Experimental investigation of mechanically laminated straight or curved-and-tapered bamboo-concrete T-beams (2023)
Journal Article
Deng, Y., Hao, Y., Mohamed, A., Wong, S. H., Tang, Y., Yuen, T. Y., Sukontasukkul, P., Shen, M., Fernando, N., Saint, R., & Zhang, H. (2023). Experimental investigation of mechanically laminated straight or curved-and-tapered bamboo-concrete T-beams. Engineering Structures, 283, Article 115896. https://doi.org/10.1016/j.engstruct.2023.115896

This study echoes the rising demand for bio-based material in concrete composite structures in the race to accelerate carbon neutrality in construction. Noticing that most previous studies are focused on straight timber or engineered bamboo-to-concre... Read More about Experimental investigation of mechanically laminated straight or curved-and-tapered bamboo-concrete T-beams.

Verification of the Photogrammetric Approach on the Torsion Test Method for Timber Beams (2021)
Journal Article
Mohamed, A., Uheida, K., Quan, Y., & Zhang, H. (2022). Verification of the Photogrammetric Approach on the Torsion Test Method for Timber Beams. International Wood Products Journal, 13(1), 3-14. https://doi.org/10.1080/20426445.2021.1983690

The photogrammetric approach was proposed in this study to evaluate torsional behaviour of glulam timber beams during the torsion test. The main objectives of the experimental work were to investigate the applicability of the photogrammetric approach... Read More about Verification of the Photogrammetric Approach on the Torsion Test Method for Timber Beams.

Performance study on mounting system for displacement transducer in mechanical tests of timber samples using photogrammetry method (2021)
Journal Article
Mohamed, A., Zhang, H., Deng, Y., Lehmann, M., Sigrist, C., Uheida, K., Zheng, Y., Bahadori-Jahromi, A., Shahidan, S., & Caudoux, R. (2022). Performance study on mounting system for displacement transducer in mechanical tests of timber samples using photogrammetry method. Wood Material Science and Engineering, 17(6), 937-953. https://doi.org/10.1080/17480272.2021.1978107

This paper presents a unique study to reveal the effect of the mounting system of the linear variable differential transformer (LVDT) on the mechanical property tests of timber materials. This effect has been overlooked in the past but proven to be s... Read More about Performance study on mounting system for displacement transducer in mechanical tests of timber samples using photogrammetry method.

Determining equivalent-sectional shear modulus in torsion tests for laminated glass beams using photogrammetry method (2021)
Journal Article
Uheida, K., Deng, Y., Zhang, H., Galuppi, L., Gao, J., Li, X., Huang, S., Qin, X., Wong, S. H. F., Guo, J., Zhang, G., & Mohamed, A. (2021). Determining equivalent-sectional shear modulus in torsion tests for laminated glass beams using photogrammetry method. Composite Structures, 276, Article 114572. https://doi.org/10.1016/j.compstruct.2021.114572

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-rota... Read More about Determining equivalent-sectional shear modulus in torsion tests for laminated glass beams using photogrammetry method.

Applicability of the Torsion Test and Photogrammetric Approach on Structural Timber Beams (2021)
Journal Article
Mohamed, A., Uheida, K., Quan, Y., & Zhang, H. (2021). Applicability of the Torsion Test and Photogrammetric Approach on Structural Timber Beams. International Wood Products Journal, 12(3), 206-217. https://doi.org/10.1080/20426445.2021.1952047

The torsion test is recommended as a standard approach to determine the shear modulus of structural-size timber and glulam beams. However, there is a difficulty in measuring the rotational deformations of timber joists. A stereo camera system and pho... Read More about Applicability of the Torsion Test and Photogrammetric Approach on Structural Timber Beams.

Photogrammetric Evaluation of Glulam Timber Shear Modulus Using Torsion Test Method and Dual Stereo Vision System (2021)
Journal Article
Mohamed, A., Deng, Y., Zhang, H., Wong, S. H. F., Uheida, K., Zhang, Y., Lehmann, M., & Quan, Y. (2021). Photogrammetric Evaluation of Glulam Timber Shear Modulus Using Torsion Test Method and Dual Stereo Vision System. European Journal of Wood and Wood Products, 79, 1209-1223. https://doi.org/10.1007/s00107-021-01729-8

The shear modulus of timber and timber-based composite materials is a fundamental me-chanical property which is used in the design of timber and engineered wood products. The problem of experimentally determining appropriate values of shear modulus f... Read More about Photogrammetric Evaluation of Glulam Timber Shear Modulus Using Torsion Test Method and Dual Stereo Vision System.

Topology optimization of multi-material structures with elastoplastic strain hardening model (2021)
Journal Article
Li, M., Deng, Y., Zhang, H., Wong, S. H. F., Mohamed, A., Zheng, Y., Gao, J., Yuen, T. Y. P., Dong, B., & Kuang, J. S. (2021). Topology optimization of multi-material structures with elastoplastic strain hardening model. Structural and Multidisciplinary Optimization, 64, 1141-1160. https://doi.org/10.1007/s00158-021-02905-3

The paper presents a new multi-material topology optimization method with novel adjoint sensitivity analysis that can accommodate not only multiple plasticity but also multiple hardening models for individual materials in composite structures. Based... Read More about Topology optimization of multi-material structures with elastoplastic strain hardening model.

Photogrammetric and Stereo Vision Techniques for Evaluating Material Properties in Timber and Timber-Based Composite Structures (2016)
Thesis
Mohamed, A. S. Photogrammetric and Stereo Vision Techniques for Evaluating Material Properties in Timber and Timber-Based Composite Structures. (Thesis). Edinburgh Napier University. http://researchrepository.napier.ac.uk/Output/462281

A fundamental requirement for efficient use of a glulam beam is an accurate knowledge of its mechanical behaviour and the material properties characterising that behaviour. It becomes extremely important to obtain accurate measurements of material pr... Read More about Photogrammetric and Stereo Vision Techniques for Evaluating Material Properties in Timber and Timber-Based Composite Structures.

A Low Cost Non-Contact and Non-Destructive Method for Evaluating the Variation of the Shear Modulus for Glued Laminated Timber Beams using a Photogrammetric Approach (2015)
Presentation / Conference Contribution
Mohamed, A., Zhang, H., Smith, I., & Xiao, Z. (2015, September). A Low Cost Non-Contact and Non-Destructive Method for Evaluating the Variation of the Shear Modulus for Glued Laminated Timber Beams using a Photogrammetric Approach. Presented at Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

This paper presents the experimental studies performed to investigate the feasibility of the proposed photogrammetric system for torsion tests. In this study, two binocular stereo systems were used to measure the surface rotation of timber glulam bea... Read More about A Low Cost Non-Contact and Non-Destructive Method for Evaluating the Variation of the Shear Modulus for Glued Laminated Timber Beams using a Photogrammetric Approach.

Evaluation of the Shear Constant of a Timber Beam using a Photogrammetric Approach (2011)
Presentation / Conference Contribution
Zhang, H., Mohamed, A., & Xiao, Z. (2011, June). Evaluation of the Shear Constant of a Timber Beam using a Photogrammetric Approach. Presented at Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing

The shear modulus is a fundamental mechanical property of wood that is used in general timber design [1,2,3]. Compared with other engineering materials, timber has relatively low shear stiffness in comparison to its modulus of elasticity, and so shea... Read More about Evaluation of the Shear Constant of a Timber Beam using a Photogrammetric Approach.