Background and persistence of fibers on vehicle seat belts

被引:0
|
作者
Bolduc, Marie-Christine [1 ,2 ]
Tremblay, Andre [3 ]
Muehlethaler, Cyril [1 ,2 ,4 ]
机构
[1] Univ Quebec Trois Rivieres, Dept Chim Biochim & Phys, Trois Rivieres, PQ, Canada
[2] Grp Rech Sci Forens, Trois Rivieres, PQ, Canada
[3] Lab Sci Judiciaires & Med Legale, Montreal, PQ, Canada
[4] Ctr Int Criminol Comparee, Montreal, PQ, Canada
关键词
Textile fibers; evaluation; transfer; car incident; frequency; Fibres; transfert; accidents de voiture; frequence; POPULATION;
D O I
10.1080/00085030.2023.2281006
中图分类号
DF [法律]; D9 [法律]; R [医药、卫生];
学科分类号
0301 ; 10 ;
摘要
Examination of the fibers transferred to vehicle seats and seat belts makes it possible to establish links in cases of vehicle theft or road accidents. Unlike seats, seat belts often have fibers that are fused to them owing to the significant forces encountered in the event of an accident, fibers that can be evaluated for their persistence and significant probative value. The aim of the project is to determine the background fiber population naturally present on seat belts, as well as to carry out simulations to study the persistence of the fibers. These were determined using zonal samples from seat belts of ten different vehicles. For the experiments, drivers of the vehicles had to wear a luminescent T-shirt for a total of 30 min, then remove it and continue driving normally for variable periods of time. The results show that the persistence of fibers on seat belts is heavily influenced by the number of times the driver fastened/unfastened their seat belt. The background population of fibers is comparable to the literature but can show important deviations when specific clothes are worn by the driver (i.e., winter accessories). L'examen des fibres transferees sur les sieges et ceintures de securite de vehicules permet d'etablir des liens dans des cas de vols de vehicule ou d'accidents de la circulation. Contrairement aux sieges, les ceintures de securite presentent souvent des fibres fusionnees a ces dernieres en raison des forces importantes rencontrees en cas d'accident, qui peuvent etre evaluees pour leur persistance et leur valeur probante importante. L'objectif etait de determiner le bruit de fond present naturellement sur les ceintures de securite, ainsi que de realiser des simulations pour etudier la persistance des fibres. Le bruit de fond et la persistance des fibres ont ete evalues sur des ceintures de securite provenant de dix vehicules differents. Les conducteurs devaient porter un chandail luminescent pour une duree de 30 min, puis le retirer et poursuivre leur conduite normalement. Les resultats montrent que la persistance des fibres sur les ceintures de securite est fortement influencee par le nombre de fois ou le conducteur boucle/deboucle sa ceinture. La population de fibres presente en bruit de fond est comparable a celle de la litterature, mais peut presenter des ecarts importants lorsque des vetements specifiques sont portes par le conducteur (ex. accessoires d'hiver).
引用
收藏
页码:96 / 111
页数:16
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