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Experimental determination of material parameters in Cuntze's Failure-Mode-Concept-based UD strength failure conditions

Petersen, Enno and Cuntze, R. and Hühne, Christian (2016) Experimental determination of material parameters in Cuntze's Failure-Mode-Concept-based UD strength failure conditions. Composites Science and Technology, 134, pp. 12-25. Elsevier. ISSN 0266-3538

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Official URL: http://dx.doi.org/10.1016/j.compscitech.2016.08.006

Abstract

The paper deals with the experimental determination of material properties required as model parameters in Cuntze's invariant-based Failure-Mode-Concept, applied to transversely-isotropic UD materials. For the envisaged 3D strength failure conditions (criteria) of this material, 5 strengths and 2 friction values must be determined. So far, no concept for the determination of the physically necessary internal friction values has been agreed to. In this publication bi-axial ARCAN tests are performed to obtain the friction values from data points on the inter-fiber failure fracture curve. The initiation of inter fiber failure is identified through sudden strain changes, recorded with strain gauges and digital image correlation. Further, the strength values for one specific material (M21/T700GC) are determined. To obtain the necessary shear strength three different shear test setups are investigated: the ±45°-Tension, the IOSIPESCU and the ARCAN test. They are compared considering the smoothness quality of their stress field distribution. The presented methodology enables to determine the two internal friction values.

Item URL in elib:https://elib.dlr.de/106977/
Document Type:Article
Title:Experimental determination of material parameters in Cuntze's Failure-Mode-Concept-based UD strength failure conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Petersen, EnnoEnno.Petersen (at) dlr.dehttps://orcid.org/0000-0002-1488-5618
Cuntze, R.formerly MAN-TechnologieUNSPECIFIED
Hühne, ChristianDLR – Institut für Faserverbundleichtbau und Adaptronik, Braunschweighttps://orcid.org/0000-0002-2218-1223
Date:2016
Journal or Publication Title:Composites Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:134
Page Range:pp. 12-25
Publisher:Elsevier
ISSN:0266-3538
Status:Published
Keywords:Failure criteria; Mechanical properties; Friction; Carbon fibers; Digital image correlation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Leitprojekt - Forschungsverbund Oberstufe
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kafka, Elena
Deposited On:21 Oct 2016 13:45
Last Modified:30 May 2019 22:05

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