What is meant by a projected fragment effect?

The projected fragment effect refers to the phenomenon where items or fragments are propelled outwards as a consequence of a pressure blast. When an explosion occurs, the rapid expansion of gases creates a shock wave that can fragment materials in the vicinity. These fragments can be thrown at high velocities away from the blast site, making it crucial for investigators to understand this effect when analyzing blast scenes. This knowledge helps in assessing the extent of damage, determining the point of origin, and understanding the dynamics of the explosion.

In blast-related investigations, recognizing the projected fragment effect allows forensic experts to identify and trace the paths of these fragments back to potential origins, which can provide vital clues in determining the cause and circumstances surrounding a fire or explosion.