fluid dynamics

Why Do Your Squeeze Travel Bottles Leak? The Hidden Physics of Luggage Drops and Cold Cargo Reference Standard: ASTM D5276 (Standard Test Method for Drop Test of Loaded Containers by Free Fall) and ASTM D746 (Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact). Short Answer Squeeze bottle travel containers typically fail not simply from cabin pressure drops, but due to violent hydrostatic shockwaves generated when luggage is dropped by baggage handlers, forcing incompressible liquids past threaded seals. Additionally, sub-zero temperatures in unheated cargo holds cause temporary hardening of silicone valves, eliminating their elastic sealing properties just when pressure spikes occur. The Hydrostatic Hammer Effect: Translating Luggage … 続きを読む