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Design and evaluation of a novel instrumented drop-weight rig for controlled impact testing of polymer composites
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures. Odqvist Laboratory, KTH.ORCID iD: 0000-0002-8336-8294
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures. Odqvist Laboratory, KTH.ORCID iD: 0000-0002-1187-4796
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. Odqvist Laboratory, KTH.ORCID iD: 0000-0001-8667-0520
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures. Odqvist Laboratory, KTH.ORCID iD: 0000-0002-9207-3404
2018 (English)In: Polymer testing, ISSN 0142-9418, E-ISSN 1873-2348, Vol. 68, p. 446-455Article in journal (Refereed) Published
Abstract [en]

A drop-weight rig (DWR) intended to test the true impact response of laminated compositematerials is presented. The test setup is designed to prevent the transfer of unwanted mechanical noise, e.g. vibrations, into the load cell that is used to measure the load during the impact event. A novel catch mechanism preventing secondary impact is also implemented in the DWR design. A detailed evaluation is performed both in terms of the experimental modal and uncertainty analysis of the measured results from the DWR. The results demonstrate that the rig is capable of capturing the true impact response, providing highly resolved and noise-free force-time measurements where even subtle details of the impact event are visible. The rig also enables impact testing with good repeatability.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 68, p. 446-455
Keywords [en]
Low velocity impact, Vibration, Uncertainty analysis, Modal analysis, Free-fall
National Category
Composite Science and Engineering
Research subject
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-228484DOI: 10.1016/j.polymertesting.2018.04.022Scopus ID: 2-s2.0-85047266915OAI: oai:DiVA.org:kth-228484DiVA, id: diva2:1209986
Projects
DAMTISS
Funder
VINNOVA, 2013-01132
Note

QC 20180525

Available from: 2018-05-25 Created: 2018-05-25 Last updated: 2018-05-30Bibliographically approved

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Burman, MagnusSegalini, AntonioHallström, Stefan

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