On the calculation of the strain energy release rate for thin-gage facesheet sandwich structures using the J-integral method

Daniel A. Drake, James R. Ratcliffe, Nelson Vieira de Carvalho, Anthony J. Paris, Structural Mechanics and Concepts Branch, NASA Langley Research Center, Damage Tolerance, and Reliability Branch, NASA Langley Research Center, Department of Mechanical Engineering, University of Alaska

Journal of Sandwich Structures & Materials

Published online on November 13, 2025

Abstract

Journal of Sandwich Structures & Materials, Volume 28, Issue 4, Page 701-719, May 2026.
Facesheet-to-core disbonding in sandwich composites is a critical failure mechanism that can occur under relatively low, out-of-plane loads. Test methods such as the single-cantilevered beam (SCB) and drum peel tests are being considered for ...