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Reliability-Based Approach for Sandwich Composite Structural Applications

SADRA EMAMI, ELIAS TOUBIA, KELLIE SCHNEIDER

Abstract


Composite sandwich structures have many advantages in engineering design, due to their light weight and resistance to corrosion and in-service environmental conditions. Recent interest in such composite structures has increased in structural applications. Liability concerns prevent most structural engineers from considering this material, specifically, when the basis of the technical design data and long-term durability behavior are still uncertain. For this purpose, several sandwich composite samples (Balsa and PVC foam) were molded and subjected to severe weathering and environmental conditions. Experimental tests to predict the core shear strength, compression and moduli of the sandwich structures were performed on 30 samples. The Load and Resistance Factor Design (LRFD) method was employed and the resistance factors of the core shear and compression strengths were developed. This work advances the current state of the art by assisting engineers to quantify the reliability of their design and increase the utilization of composites as a reliable material for structures. The results of this research will ultimately lead to a probabilistic analysis model as well as act as a reference to guide those applying this technology.


DOI
10.12783/asc33/26123

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