Radial and Oblique Impact Testing of Alpine Helmets onto Snow Surfaces
Abstract
:1. Introduction
2. Materials and Methods
2.1. Snow Sample Collection
2.2. Helmets
2.3. Impact Testing
2.3.1. Radial Impacts
2.3.2. Oblique Impacts
2.4. Data Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Snow Sample Collection | Ambient Temperature [°C] | Freezer Time [Hours] | Headform Condition | N | Peak Linear Headform Acceleration [g] | ||
---|---|---|---|---|---|---|---|
Mean | SD | CV | |||||
Morning | 2–6 | 0 | Bare | 1 | 81.7 | ||
Beanie | 2 | 77.4 | 6.3 | 8.1% | |||
Helmet (M) | 3 | 80.2 | 15.6 | 19.4% | |||
Helmet (L) | 3 | 80.2 | 8.8 | 11.0% | |||
2 | Helmet (L) | 3 | 96.1 | 13.0 | 13.6% | ||
Noon | 12 | 0 | Bare | 1 | 34.1 | ||
Beanie | 2 | 50.1 | 0.5 | 1.1% |
Peak Linear Headform Acceleration [g] | |||
---|---|---|---|
Coefficient | Standard Error | p-Value | |
Intercept | 80.2 | 6.6 | <0.001 |
Noon | −34.0 | 9.3 | 0.005 |
Freezer | 15.9 | 9.3 | 0.120 |
Bare | −5.3 | 11.4 | 0.654 |
Beanie | 0.6 | 9.8 | 0.954 |
Medium | −0.01 | 9.3 | 0.999 |
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Patton, D.A.; Mohammadi, R.; Halldin, P.; Kleiven, S.; McIntosh, A.S. Radial and Oblique Impact Testing of Alpine Helmets onto Snow Surfaces. Appl. Sci. 2023, 13, 3455. https://doi.org/10.3390/app13063455
Patton DA, Mohammadi R, Halldin P, Kleiven S, McIntosh AS. Radial and Oblique Impact Testing of Alpine Helmets onto Snow Surfaces. Applied Sciences. 2023; 13(6):3455. https://doi.org/10.3390/app13063455
Chicago/Turabian StylePatton, Declan A., Reza Mohammadi, Peter Halldin, Svein Kleiven, and Andrew S. McIntosh. 2023. "Radial and Oblique Impact Testing of Alpine Helmets onto Snow Surfaces" Applied Sciences 13, no. 6: 3455. https://doi.org/10.3390/app13063455
APA StylePatton, D. A., Mohammadi, R., Halldin, P., Kleiven, S., & McIntosh, A. S. (2023). Radial and Oblique Impact Testing of Alpine Helmets onto Snow Surfaces. Applied Sciences, 13(6), 3455. https://doi.org/10.3390/app13063455