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Non-destructive testing of future rocket boosters using air-coupled ultrasound

Huber, Armin (2016) Non-destructive testing of future rocket boosters using air-coupled ultrasound. In: 19th World Conference on NDT. WCNDT 2016, 13.-17. Juni 2016, München, Deutschland.

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Abstract

Air- and space craft vehicles are constructed from an increasing amount of carbon fibre reinforced plastics (CFRP). In particular, the European Space Agency’s (ESA) future launch vehicle Ariane 6 is intended to have a solid rocket motorcase (booster) fabricated from CFRP for the first time in order to save weight and therefore enable Ariane 6 to work more efficient. In the frame of the joint research project ComBo (Effiziente Fertigungstechnologie für Composite Boostersegmente - efficient fabrication technology for composite booster segments) a pressure vessel had been designed and manufactured by MT-Aerospace to prove production technology for the final rocket booster. In ComBo, the Center for Lightweight Production Technology (ZLP) of the German Aerospace Center (DLR) covered the non-destructive inspection (NDI) of the pressure vessel by using air-coupled ultrasonic testing (ACUT) in reflection mode. In this paper we show the pressure vessel with its high demands regarding testability and outline the physics of lamb waves and working principles of ACUT as well as its advantages over water-coupled ultrasound. The high-end capabilities of the ACUT device and -procedure applied at DLR/ZLP as well as measured C-scans and the automated detection of flaws on it are presented.

Item URL in elib:https://elib.dlr.de/109871/
Document Type:Conference or Workshop Item (Speech)
Title:Non-destructive testing of future rocket boosters using air-coupled ultrasound
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Huber, ArminArmin.Huber (at) dlr.dehttps://orcid.org/0000-0002-5694-8293
Date:June 2016
Journal or Publication Title:19th World Conference on NDT
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:non-contact testing, guided waves, robotics, carbon fibre reinforced plastics
Event Title:WCNDT 2016
Event Location:München, Deutschland
Event Type:international Conference
Event Dates:13.-17. Juni 2016
Organizer:Deutsche Gesellschaft für zerstörungsfreie Prüfung e.V.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Augsburg
Institutes and Institutions:Institute of Structures and Design > Automation and Quality Assurance in Production
Deposited By: Huber, Armin
Deposited On:20 Dec 2016 11:19
Last Modified:20 Dec 2016 11:19

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