Evaluate Packaging Performance Under Loose Load Vibration
During transportation, unsecured packages may briefly lift off the vehicle floor due to vehicle movement and repeatedly strike the surface as they fall back. These repeated impacts can damage both the packaging and the product inside.
Loose load vibration testing under ASTM D4169 Schedule F evaluates the packaging system's ability to protect the product under these conditions.
Repeated vibration and impacts can place stress on packaging closures and internal protective materials. Products may move inside the packaging, causing abrasion between contacting surfaces or loosening of connections. Loose load vibration testing helps evaluate how these conditions affect the packaging system. Unlike vehicle vibration testing, it focuses specifically on the repeated impacts experienced by unsecured loads during transportation.
The packaged sample is placed on a test platform that produces repeated movements. The test is conducted so that the sample briefly lifts off the platform and then makes contact with it again. Restraints are used to prevent the sample from falling off the platform without restricting the movement required for testing. The test duration and sample orientations are determined based on the selected distribution cycle, assurance level, and expected orientations during transportation.
Following loose load vibration testing, the packaging system is inspected for structural damage, including tears, abrasion, closure failure, and loosening of joints or connections. The condition and positioning of the product and internal protective components are also assessed for signs of movement, displacement, or impact-related damage. Test findings are compared against predefined acceptance criteria to determine whether the packaging system maintains its structural integrity and provides adequate product protection under repeated vibration and impact conditions.
ASTM D4169 — Schedule F: Loose Load Vibration
ASTM D999 — Standard Test Methods for Vibration Testing of Shipping Containers
The testing scope is determined based on your product characteristics, packaging design, and expected distribution conditions.
Contact us to discuss your testing needs and plan the appropriate tests for your product.