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Low-velocity impact response of wood-strand sandwich panels and their components

  • Mostafa Mohammadabadi , Vikram Yadama EMAIL logo , LiHong Yao and Debes Bhattacharyya
Published/Copyright: April 25, 2018
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Holzforschung
From the journal Holzforschung Volume 72 Issue 8

Abstract

Profiled hollow core sandwich panels (SPs) and their components (outer layers and core) were manufactured with ponderosa and lodgepole pine wood strands to determine the effects of low-velocity impact forces and to observe their energy absorption (EA) capacities and failure modes. An instrumented drop weight impact system was applied and the tests were performed by releasing the impact head from 500 mm for all the specimens while the impactors (IMPs) were equipped with hemispherical and flat head cylindrical heads. SPs with cavities filled with a rigid foam insulation material (SPfoam) were also tested to understand the change in EA behavior and failure mode. Failure modes induced by both IMPs to SPs were found to be splitting, perforating, penetrating, core crushing and debonding between the core and the outer layers. SPfoams absorbed 26% more energy than unfilled SPs. SPfoams with urethane foam suffer less severe failure modes than SPs. SPs in a ridge-loading configuration absorbed more impact energy than those in a valley-loading configuration, especially when impacted by a hemispherical IMP. Based on the results, it is evident that sandwich structure is more efficient than a solid panel concerning impact energy absorption, primarily due to a larger elastic section modulus of the core’s corrugated geometry.

Keywords: corrugated core; energy absorption; impact behavior; insulated sandwich panel; sandwich panel; sheathing material; wood-strand composite

Acknowledgments

Our gratitude to the Centre for Advanced Composite Materials (CACM) at the University Of Auckland, New Zealand, for letting us use the impact testing equipment. The authors would also like to thank Mr. Jos Geurts of CACM for his help and guidance during the impact testing. This material is based upon work partially supported by the National Science Foundation under Grant No. CMMI-1150316 (Funder Id: 10.13039/100000147).

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

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Received: 2017-10-20
Accepted: 2018-03-20
Published Online: 2018-04-25
Published in Print: 2018-07-26

©2018 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Selected paper from the 19th ISWFPC - International Symposium on Wood, Fibre and Pulping Chemistry, held in Porto Seguro, Brazil, August 30–September 1
  3. Modeling kraft cooking kinetics of fiber mixes from TMP and unbleached kraft pulps for assessment of old corrugated cardboard delignification
  4. Effect of autohydrolysis on alkaline delignification of mixed hardwood chips and on lignin structure
  5. Lignin-based coatings for controlled P-release fertilizer consisting of granulated simple superphosphate
  6. A matrix-resistant HPTLC method to quantify monosaccharides in wood-based lignocellulose biorefinery streams
  7. Review
  8. Utilization and characterization of amino resins for the production of wood-based panels with emphasis on particleboards (PB) and medium density fibreboards (MDF). A review
  9. Original Articles
  10. Influence of veneer thickness, mat formation and resin content on some properties of novel poplar scrimbers
  11. Low-velocity impact response of wood-strand sandwich panels and their components
  12. Interactions between PLA, PE and wood flour: effects of compatibilizing agents and ionic liquids
  13. Industrial Thermowood® and Termovuoto thermal modification of two hardwoods from Mozambique
  14. Boron fixation effect of quaternary ammonium compounds (QACs) on sodium fluoroborate (NaBF4)-treated wood
https://doi.org/10.1515/hf-2017-0169
Keywords for this article
corrugated core; energy absorption; impact behavior; insulated sandwich panel; sandwich panel; sheathing material; wood-strand composite

Articles in the same Issue

  1. Frontmatter
  2. Selected paper from the 19th ISWFPC - International Symposium on Wood, Fibre and Pulping Chemistry, held in Porto Seguro, Brazil, August 30–September 1
  3. Modeling kraft cooking kinetics of fiber mixes from TMP and unbleached kraft pulps for assessment of old corrugated cardboard delignification
  4. Effect of autohydrolysis on alkaline delignification of mixed hardwood chips and on lignin structure
  5. Lignin-based coatings for controlled P-release fertilizer consisting of granulated simple superphosphate
  6. A matrix-resistant HPTLC method to quantify monosaccharides in wood-based lignocellulose biorefinery streams
  7. Review
  8. Utilization and characterization of amino resins for the production of wood-based panels with emphasis on particleboards (PB) and medium density fibreboards (MDF). A review
  9. Original Articles
  10. Influence of veneer thickness, mat formation and resin content on some properties of novel poplar scrimbers
  11. Low-velocity impact response of wood-strand sandwich panels and their components
  12. Interactions between PLA, PE and wood flour: effects of compatibilizing agents and ionic liquids
  13. Industrial Thermowood® and Termovuoto thermal modification of two hardwoods from Mozambique
  14. Boron fixation effect of quaternary ammonium compounds (QACs) on sodium fluoroborate (NaBF4)-treated wood
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