A computational study of the EN 1078 impact test for bicycle helmets using a realistic subject-specific finite element head model

Sandberg, Michael; Tse, Kwong Ming; Tan, Leng Seow; Lee, Heow Pueh

doi:10.1080/10255842.2018.1511775

Cited by 14 publications

(6 citation statements)

References 19 publications

(21 reference statements)

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“…This could be explained by the fact that bicycle helmets are designed to protect against an impact of approximately 20 km/h; in most MVCs the impact is likely to be (much) higher. 37 The assumed larger protective effect in one-sided bicycle crashes compared with bicycle-MVCs is in line with an earlier study. 38 However, this does not have to discredit the bicycle helmet use because motorized vehicles were involved in a minority of TBIs in our study.…”

Section: Discussionsupporting

confidence: 87%

Bicycle Helmets and Bicycle-Related Traumatic Brain Injury in the Netherlands

Brand

Karger

Nijman

et al. 2020

Neurotrauma Reports

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Section: Discussionsupporting

confidence: 87%

Bicycle Helmets and Bicycle-Related Traumatic Brain Injury in the Netherlands

Brand

Karger

Nijman

et al. 2020

Neurotrauma Reports

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“…The understanding of the pathomechanism of fractures is extremely important. It may find applications not only in industry (during designing helmets and other protectors for the head and neck) [ 20 , 21 , 22 , 23 ] and forensic medicine [ 24 ], but also in identifying the optimal bridging methods. The key factor for determining the long-term success of osseointegration is rigid fixation.…”

Section: Trauma Surgerymentioning

confidence: 99%

Application of Finite Element Analysis in Oral and Maxillofacial Surgery—A Literature Review

Lisiak-Myszke¹,

Marciniak

Bieliński

et al. 2020

Materials

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In recent years in the field of biomechanics, the intensive development of various experimental methods has been observed. The implementation of virtual studies that for a long time have been successfully used in technical sciences also represents a new trend in dental engineering. Among these methods, finite element analysis (FEA) deserves special attention. FEA is a method used to analyze stresses and strains in complex mechanical systems. It enables the mathematical conversion and analysis of mechanical properties of a geometric object. Since the mechanical properties of the human skeleton cannot be examined in vivo, a discipline in which FEA has found particular application is oral and maxillofacial surgery. In this review we summarize the application of FEA in particular oral and maxillofacial fields such as traumatology, orthognathic surgery, reconstructive surgery and implantology presented in the current literature. Based on the available literature, we discuss the methodology and results of research where FEA has been used to understand the pathomechanism of fractures, identify optimal osteosynthesis methods, plan reconstructive operations and design intraosseous implants or osteosynthesis elements. As well as indicating the benefits of FEA in mechanical parameter analysis, we also point out the assumptions and simplifications that are commonly used. The understanding of FEA’s opportunities and advantages as well as its limitations and main flaws is crucial to fully exploit its potential.

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“…The dynamic impact simulations were designed to replicate the impact testing with a flat anvil, as described in European standard, EN 1078. For the purpose of model validation, the impact location directly on top of the helmet was selected to best replicate conditions shown by Sandberg et al [ 36 ], in which an identical model was used. The flat steel anvil was modelled as a rigid plate, which was constrained in all six DOFs, whereas the initial velocity of the helmet–headform/head model was set to 5.42 m⋅s −1 to simulate the terminal velocity of a 1.5 m drop with a 4.73 kg head and 0.2 kg helmet, as outlined in EN 1078 standard.…”

Section: Methodsmentioning

confidence: 99%

A Biomechanical Evaluation of a Novel Airbag Bicycle Helmet Concept for Traumatic Brain Injury Mitigation

Tse

Holder

2021

Bioengineering

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In this study, a novel expandable bicycle helmet, which integrates an airbag system into the conventional helmet design, was proposed to explore the potential synergetic effect of an expandable airbag and a standard commuter-type EPS helmet. The traumatic brain injury mitigation performance of the proposed expandable helmet was evaluated against that of a typical traditional bicycle helmet. A series of dynamic impact simulations on both a helmeted headform and a representative human head with different configurations were carried out in accordance with the widely recognised international bicycle helmet test standards. The impact simulations were initially performed on a ballast headform for validation and benchmarking purposes, while the subsequent ones on a biofidelic human head model were used for assessing any potential intracranial injury. It was found that the proposed expandable helmet performed admirably better when compared to a conventional helmet design—showing improvements in impact energy attenuation, as well as kinematic and biometric injury risk reduction. More importantly, this expandable helmet concept, integrating the airbag system in the conventional design, offers adequate protection to the cyclist in the unlikely case of airbag deployment failure.

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A computational study of the EN 1078 impact test for bicycle helmets using a realistic subject-specific finite element head model

Cited by 14 publications

References 19 publications

Bicycle Helmets and Bicycle-Related Traumatic Brain Injury in the Netherlands

Bicycle Helmets and Bicycle-Related Traumatic Brain Injury in the Netherlands

Application of Finite Element Analysis in Oral and Maxillofacial Surgery—A Literature Review

A Biomechanical Evaluation of a Novel Airbag Bicycle Helmet Concept for Traumatic Brain Injury Mitigation

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