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Simulation-based assessment for construction helmets

Author

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  • James Long
  • James Yang
  • Zhipeng Lei
  • Daan Liang

Abstract

In recent years, there has been a concerted effort for greater job safety in all industries. Personnel protective equipment (PPE) has been developed to help mitigate the risk of injury to humans that might be exposed to hazardous situations. The human head is the most vulnerable to impact as a moderate magnitude can cause serious injury or death. That is why industries have required the use of an industrial hard hat or helmet. There have only been a few articles published to date that are focused on the risk of head injury when wearing an industrial helmet. A full understanding of the effectiveness of construction helmets on reducing injury is lacking. This paper presents a simulation-based method to determine the threshold at which a human will sustain injury when wearing a construction helmet and assesses the risk of injury for wearers of construction helmets or hard hats. Advanced finite element, or FE, models were developed to study the impact on construction helmets. The FE model consists of two parts: the helmet and the human models. The human model consists of a brain, enclosed by a skull and an outer layer of skin. The level and probability of injury to the head was determined using both the head injury criterion (HIC) and tolerance limits set by Deck and Willinger. The HIC has been widely used to assess the likelihood of head injury in vehicles. The tolerance levels proposed by Deck and Willinger are more suited for finite element models but lack wide-scale validation. Different cases of impact were studied using LSTC's LS-DYNA.

Suggested Citation

  • James Long & James Yang & Zhipeng Lei & Daan Liang, 2015. "Simulation-based assessment for construction helmets," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 18(1), pages 24-37, January.
    • Handle: RePEc:taf:gcmbxx:v:18:y:2015:i:1:p:24-37
    DOI: 10.1080/10255842.2013.774382
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    References listed on IDEAS

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    1. Wenyi Yan & Oscar Pangestu, 2011. "A modified human head model for the study of impact head injury," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 14(12), pages 1049-1057.
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