Title: Design For Inspection: A Formalized Approach to Evaluating the Inspectability of Aerospace Structures Early in the Design Process

Authors: Peter D. Juarez, Starr Dauria, Sébastien Lonne, Bastien Clausse, Hong Tat, Jill Bingham

DOI: 10.33599/nasampe/s.24.0168

Abstract: "Nondestructive evaluation (NDE) engineers are often confronted with structural design choices that present challenges to meeting inspection requirements. These challenges, at best, increase the resources needed to design an inspection solution and, at worst, require resource intensive redesign of the structure. If the inspectability of structure can be determined early in the design cycle, these challenging inspection scenarios can be avoided. Therefore, there exists a need for a resource friendly formalized approach to gauge the inspectability of a structure. In this paper, the use of a novel inspectability metric to meet this need is proposed. The inspectability metric is a standardized, automation friendly procedure that uses simulations to determine inspectability. It provides a suite of simulation tests to interrogate the ability to find defects and the sensitivity to variability. The testing rubric is designed to maximize the coverage of the parameter space while minimizing the number of simulations needed. In this preliminary study, we will demonstrate how the inspectability metric is able to determine the inspectability of a structure as a function of changes in the design of the structure."

References: 1.Calkins, Dale E., et al, Aerospace system unified life cycle engineering: Producibility measurement issues. Institute for Defense Analyses Paper, Alexandria, Virginia, 1989: P-2151. 2.Acha, Virginia, Stefano Brusoni, and Andrea Prencipe. Exploring the miracle: strategy and management of the knowledge base in the aeronautics industry. International Journal of Innovation and Technology Management 4.01, 2007: 15-39. 3.Raghvendra, Srinivas, and Philippe Hurat. DFM: Linking design and manufacturing. 18th International Conference on VLSI Design held jointly with 4th International Conference on Embedded Systems Design. IEEE, 2005. 4.O’Driscoll, Martin, Design for manufacture. Journal of materials processing technology 122.2-3 2002: 318-321. 5.Extende CIVA, CIVA in a few words. Extende Inc., Retrieved December 2023, from https://www.extende.com/civa-in-a-few-words 6.Howell, Patricia A., Nondestructive evaluation (NDE) methods and capabilities handbook. NASA/TM−2020-220568/Volume I No. L-21112. 2020. 7.Brasington, Alex, et al, Integration of design data into automated fiber placement process planning metrics. Society of Advanced Materials and Process Engineering (SAMPE), 2023. 8.F. Foucher et al, An overview of validation campaigns of the CIVA simulation software. Proceedings of ECNDT, 2018. 9.WFNDEC, World Federation of Nondestructive Evaluation Centers, Retrieved December 2023, from http://wfndec.org 10.Noevere, A., Effects of defects analysis and sizing framework for efficient design of composite structures, Society of Advanced Materials and Process Engineering (SAMPE), 2023. 11.Leckey, Cara AC, Francisco Hernando Quintanilla, and Christina M. Cole, Numerically stable finite difference simulation for ultrasonic NDE in anisotropic composites. AIP Conference Proceedings. Vol. 1949. No. 1. AIP Publishing, 2018.

Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000168

Pages: 15

Price: $30.00