Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
An experimental and numerical study of the effect of some manufacturing defects
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-5235-1000
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-6616-2964
Show others and affiliations
2013 (English)In: ICCM International Conferences on Composite Materials, International Committee on Composite Materials , 2013, p. 4105-4112Conference paper, Published paper (Refereed)
Abstract [en]

During the manufacturing process of composite structural parts, layer of fabrics or unidirectional prepreg may have to be cut in order to fulfil production requirements. From a general mechanical point of view, cutting fibres in a composite part has a large negative impact on the mechanical properties. However, such interventions are necessary in particular cases, for example due to draping of complex geometries. A rather extensive test program was launched to investigate the effects of defects that typically could arise during manufacturing. The overall purpose of the test program was to determine knock-down factors on strength for typical manufacturing defects that occasionally arise and sometimes are hard to avoid in production: cuts/gaps and fibre angle deviations. Four types of specimens were tested, reference, intersection of cuts in adjacent layers combined with a bolt hole, cut in a zero degree ply combined with a bolt hole and specimens with misaligned fibres. The specimens with misaligned fibres were tested with three different fibre angles. In addition to the experimental procedure, FE-analyses utilising cohesive elements were conducted, and after mechanical tests, Non Destructive Investigation (NDI) and fractographic investigations were performed. An excellent correlation between analyses and experiments were obtained. 

Place, publisher, year, edition, pages
International Committee on Composite Materials , 2013. p. 4105-4112
Keywords [en]
Experimental, Fractographic investigation, Manufacturing defect, Numerical analysis
National Category
Composite Science and Engineering
Research subject
SRA - Production
Identifiers
URN: urn:nbn:se:kth:diva-237213Scopus ID: 2-s2.0-85053216407OAI: oai:DiVA.org:kth-237213DiVA, id: diva2:1259726
Conference
19th International Conference on Composite Materials, ICCM 2013; Montreal; Canada; 28 July 2013 through 2 August 2013
Funder
XPRES - Initiative for excellence in production research
Note

QC 20181030

Available from: 2018-10-30 Created: 2018-10-30 Last updated: 2020-01-28Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus

Authority records BETA

Norrby, MonicaÅkermo, MalinNyman, Teresia

Search in DiVA

By author/editor
Norrby, MonicaÅkermo, MalinNyman, Teresia
By organisation
Lightweight StructuresKTH
Composite Science and Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 692 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf