Identification of in-plane elastic constants of composite laminates using measured strains

Tai-Yan Kam*, C. H. Lin, W. T. Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A method for nondestructive evaluation of material constants of composite laminates is presented. An error function is established to measure the differences between the theoretically and experimentally predicted strains. The identification of the material constants is formulated as a constrained minimization problem in which the material constants are determined to make the error function a global minimum. A global minimization method together with a technique for normalizing the gradient of the objective function are used to solve the above minimization problem. The applications of the proposed method are demonstrated by means of several examples on the material constants identification of laminated composite cylindrical pressure vessels.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Materials Division (Publication) MD
PublisherASME
Pages141-146
Number of pages6
Volume86
ISBN (Print)0791816419
StatePublished - 1 Dec 1999
EventDurability and Damage Tolerance of Composite Materials and Structures - 1999 (The ASME International Mechanical Engineering Congress and Exposition) - Nashville, TN, USA
Duration: 14 Nov 199919 Nov 1999

Conference

ConferenceDurability and Damage Tolerance of Composite Materials and Structures - 1999 (The ASME International Mechanical Engineering Congress and Exposition)
CityNashville, TN, USA
Period14/11/9919/11/99

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  • Cite this

    Kam, T-Y., Lin, C. H., & Wang, W. T. (1999). Identification of in-plane elastic constants of composite laminates using measured strains. In American Society of Mechanical Engineers, Materials Division (Publication) MD (Vol. 86, pp. 141-146). ASME.