Cure monitoring of Boeing 737 test-bed fuselage skin composite repair using optical fibers sensing technique

I. Kressel, U. Ben-Simon, K. Rozowsky, H. Leibovich, Z. Tron, G. Ghilai, B. Bloch, S. Pascal, M. Tur

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper presents a cure monitoring process and service experience of a co-cured bonded composite patch repair applied to a damage on a Boeing 737 fuselage skin. This repair was applied in a location where no standard SRM repair could be adopted. Therefore, to ensure the quality and robustness of the repair, its application process was monitored by embedded fiber- optic Bragg sensors in real time. Such a sensing concept provides real time monitoring of the temperature distribution over the entire patch during the curing process. It also follows the development of the anticipated residual strains, which are induced, for a successful bonding of the composite patch to the aluminum substrate, by the mismatch between the thermal expansion coefficients of the two materials. Tracking these two parameters ensures proper temperature distribution at high spatial resolution, over the entire repair, combined with a quantitative assessment of the structural strength of the bond via the evaluation of the residual strains.

Original languageEnglish
Pages555-559
Number of pages5
StatePublished - 2018
Event58th Israel Annual Conference on Aerospace Sciences, IACAS 2018 - Tel-Aviv and Haifa, Israel
Duration: 14 Mar 201815 Mar 2018

Conference

Conference58th Israel Annual Conference on Aerospace Sciences, IACAS 2018
Country/TerritoryIsrael
CityTel-Aviv and Haifa
Period14/03/1815/03/18

Fingerprint

Dive into the research topics of 'Cure monitoring of Boeing 737 test-bed fuselage skin composite repair using optical fibers sensing technique'. Together they form a unique fingerprint.

Cite this