Change search
ReferencesLink to record
Permanent link

Direct link
Microdamage analysis in thermally aged CF/polyimide laminates
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Number of Authors: 3
2016 (English)In: IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X, Vol. 139, 012050Article in journal (Refereed) Published
Abstract [en]

Microdamage in layers of CF Thornel® T650 8-harness satin woven composite with thermosetting polyimide NEXIMID® MHT-R resin was analysed. After cooling to room temperature multiple intra-bundle cracking due to tensile transverse thermal stresses was observed in the studied [(+45/-45)/(90/0)]2s composite. The composite was subjected to thermal cycling quantifying the increase of crack density in layers. Comparison of two ramps with the same lowest temperature shows that the highest temperature in the cycle has a significant detrimental effect. Exposure for 40 days to 288°C caused many new cracks after cooling down to room temperature. Both aged and not aged specimens were tested in uniaxial quasi-static tension. Cracking was analysed using fracture mechanics and probabilistic approaches. Cracking in off-axis layers was predicted based on Weibull analysis of the 90- layer. The thermal treatment degraded the cracking resistance of the surface layer and of the next layer.

Place, publisher, year, edition, pages
2016. Vol. 139, 012050
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-59579DOI: 10.1088/1757-899X/139/1/012050ScopusID: 2-s2.0-84989345037OAI: oai:DiVA.org:ltu-59579DiVA: diva2:1033569
Conference
37th Risø International Symposium on Materials Science, 5 - 8 September 2016, Technical University of Denmark Risø Campus, Roskilde
Available from: 2016-10-07 Created: 2016-10-07 Last updated: 2016-11-22

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Varna, JanisZrida, HanaFernberg, Patrik
By organisation
Material Science
In the same journal
IOP Conference Series: Materials Science and Engineering
Composite Science and Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 20 hits
ReferencesLink to record
Permanent link

Direct link