Thapana Chongraks.. Investigation of rest mark from blade launcher rest on the arrow shot by compound bow. Master's Degree(Forensic Science). Mahidol University. Mahidol University Library and Knowledge Center. : Mahidol University, 2013.
Investigation of rest mark from blade launcher rest on the arrow shot by compound bow
Abstract:
Nowadays, the usage of bows and arrows has been greatly deviated from its normal functions like hunting and sporting tools. They are increasingly found to be misused as killing weapons and drug delivery tools in many places around the world including Thailand. In such cases, an arrow found at a crime scene is expected to contain a vital clue for an investigator to match the evidence with the launching bow or even the shooter. The investigation conducted for the matching arrow and bow is based on the tool mark analysis similar to what is normally conducted in the ballistic investigation. In this study, rest marks left on a shot arrow by a blade launcher from a compound bow are studied. The rest mark on the arrow shafts are intentionally created by a number of shootings. The rest marks are exactly located by conventional methods such as parafilm wrapping and fingerprint powder coating. Careful examination on the patterns of rest marks by different methods such as naked eyes, stereomicroscope and comparison microscope are performed. Although the observation obtained hardly reveals the link of an arrow with its origin, the unique impression on an arrow can certainly be used to eliminate unrelated evidences found in the investigation.