| Estimation of effective mass of longish rigid instruments in head impacts. | |
| | |
MedLine Citation:
|
PMID: 20676895 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Impacts to the head are a common form of body violence and thus a relevant legal medical issue. Biomechanical assessment of injury potential has been traditionally based on qualitative analysis and experience. The aim of this study was to collect benchmark data that would facilitate the assessment of the maximum force in head impacts with longish rigid instruments. Series of measurements were performed with a specially designed modifiable impactor, and the relationship between its inertial properties and its effective mass during the impact was studied. The effective mass was defined as the amount of point mass that would, if exposed to the same velocity change as the striking end of the instrument, produce the same area under the force-time curve as the impactor. The results show that the effective mass decreases from approximately 100% of the total body mass for very short impactors to about 50% for longer (approximately 70 cm) impactors. No influence of the hand/grip force on the effective mass of the impactor was found if it was used in a hammer-like manner; other striking techniques can lead to substantial increase of the effective mass attributable to the hand/grip force. |
| | |
Authors:
|
Jiri Adamec; Norbert Praxl; Klaus Schneider; Matthias Graw |
Related Documents
:
|
17410375 - Hand vibration: non-contact measurement of local transmissibility. 8817265 - Grip-force responses to unanticipated object loading: load direction reveals body- and ... 9772255 - Mechanisms for force adjustments to unpredictable frictional changes at individual digi... 16527315 - A visual-haptic necker cube reveals temporal constraints on intersensory merging during... 10912835 - Low-frequency otolith and semicircular canal interactions after canal inactivation. 12741895 - Disappearance of meconium pigment in placental specimens on exposure to light. |
Publication Detail:
|
Type: Journal Article Date: 2010-07-30 |
Journal Detail:
|
Title: International journal of legal medicine Volume: 125 ISSN: 1437-1596 ISO Abbreviation: Int. J. Legal Med. Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-10-13 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9101456 Medline TA: Int J Legal Med Country: Germany |
Other Details:
|
Languages: eng Pagination: 763-71 Citation Subset: IM |
Affiliation:
|
Institute for Legal Medicine, Ludwig-Maximilian-University Munich, Munich, Germany, jiri.adamec@med.uni-meunchen.de. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Sudden unexpected death due to inflammatory myofibroblastic tumor of the heart: a case report and re...
Next Document: Performance and physiological responses to repeated-sprint and jump sequences.