Energy Absorbency and Impact Resistance of D3O® Materials Under Dynamic Impact Loadings
Anas A. Shargawi,
Michael J. Jorgensen,
Nils A. Hakansson,
Ryan Z. Amick,
Ramazan Asmatulu
Issue:
Volume 10, Issue 1, June 2023
Pages:
1-10
Received:
30 July 2022
Accepted:
9 January 2023
Published:
17 January 2023
Abstract: Hand-held power tools, such as percussive riveting tools, produce vibrational forces that are transmitted through the hands, arms, and elbows. These vibrational forces may be responsible for the causation of short and long-term neuronal and/or vascular diseases. Personal protective materials are available commercially, some of which are used during the operation of percussive power tools (e.g., anti-vibration gloves). In previous studies, D3O® materials showed a greater absorption of impact energy in low-velocity static impact testing compared to conventional materials. In this study, D3O® materials were tested under dynamic impact loadings to evaluate resistance to impact characteristics to assess the adequacy of an ergonomic intervention using D3O® materials. An experiment was performed to evaluate material resistance to impact by evaluating the peak load values with different precompression magnitudes and loading frequencies. D3O® materials showed that compression magnitude was a statistically significant factor (p = 0.00) affecting the peak load value compared to loading frequency, which had little to no effect when tested under 14 Hz or less. As peak loads increase, the resistance to impact loading decreases and energy transmission increases. D3O® back protector (DBP) and D3O® Rifle Harness (DRH) exhibited lower peak values compared to D3O® Recoil Pad (DRP) material. D3O® materials may be considered to be utilized in a riveting and bucking intervention to reduce vibrational forces from percussive tools in a dynamic aircraft manufacturing environment.
Abstract: Hand-held power tools, such as percussive riveting tools, produce vibrational forces that are transmitted through the hands, arms, and elbows. These vibrational forces may be responsible for the causation of short and long-term neuronal and/or vascular diseases. Personal protective materials are available commercially, some of which are used during...
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