From ashes to evidence: A study on the alterations in bloodstain patterns in high heat environments and post-fire scenes.

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Tác giả: Zack Kowalske, Abdulrahman Oleiwi, Graham Williams

Ngôn ngữ: eng

Ký hiệu phân loại: 005.752 Flat-file databases

Thông tin xuất bản: United States : Journal of forensic sciences , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 736542

Fire is often used to conceal or destroy evidence of violent crimes, making it essential to understand how fire environments affect forensic evidence, particularly bloodstain patterns. This study investigates the impact of high heat environments and fire on the morphology and analysis of bloodstain patterns. Using controlled fire exposure, bloodstains were analyzed pre- and post-fire exposure on various substrates, including glass, painted drywall, and painted plywood. Measurements of angle of impact (AOI) and area of origin (AOO) were conducted using Faro Zone 3D Expert software. Despite physical alterations due to extreme temperature exposure, certain characteristics of the original bloodstains persisted. AOI calculations showed minimal deviation between pre- and post-fire measurements, with standard deviations generally under two degrees. AOO estimations also demonstrated no substantial statistical differences between pre- and post-fire data. The study confirms that bloodstain patterns retain observable traits despite exposure to high heat conditions, supporting the reliability of BPA in fire-affected scenarios. These findings enhance the understanding of bloodstain behavior in fire environments, aiding forensic investigations in accurately analyzing bloodstain patterns in cases involving fire or high-temperature conditions.
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