Lõikejäljed

Lõikejäljed, a term derived from the Estonian word for "cutting marks," refers to microscopic evidence left behind when a tool, such as a saw, knife, or wire, is used to sever material. These marks are often examined in forensic investigations to identify the type of tool used, determine the sequence of events, and potentially link a specific tool to a crime scene. The unique characteristics of lõikejäljed are influenced by the tool's design, the material being cut, and the force applied.

Analysis of lõikejäljed involves careful microscopic examination. Investigators look for features like striations, which are fine parallel lines created by the microscopic imperfections on the cutting edge of the tool. The spacing, depth, and pattern of these striations can be unique to a particular tool, much like a fingerprint. Other characteristics may include nicks, gouges, or wear patterns on the cutting edge, which are transferred to the material being cut.

In forensic science, the study of lõikejäljed is crucial in reconstructing events. For instance, in cases of forced entry where a door or window has been cut, the lõikejäljed on the frame and the tool itself can provide vital clues. Similarly, in cases involving the cutting of rope, wire, or other materials, the analysis of lõikejäljed can help determine if a specific tool found in the possession of a suspect was used. The field often utilizes comparative analysis, where known lõikejäljed from a suspect tool are compared to unknown lõikejäljed found at a crime scene.