Concentrated Impact Testing for Transport Packaging (ASTM D6344)
Representative Infinita Engineering Visual explaining the four-step workflow for Transport Packaging Concentrated Impact Test.What Is ASTM D6344 Concentrated Impact Testing?
ASTM D6344 is the Standard Test Method for Concentrated Impacts to Transport Packages. It evaluates whether a fully loaded shipping package can withstand low-level, localized impacts typical of distribution — freight jostling against a package in a vehicle, accidental bumps during loading and unloading, or packages striking one another on conveyors and chutes. It’s best suited to thin fluted/lighter-grade corrugated boxes and stretch-wrapped packaging.
Test Procedure
The complete, filled transport package is impacted at pre-identified points using a solid steel rod with a rounded end, either as a guided free-fall (through a cylindrical guide tube) or pendulum-style swing, from specified heights and energy levels. Testing is typically performed on the package faces most likely to encounter concentrated impacts in distribution — small packages may be tested on all sides, while larger containers are typically tested on the four vertical sides and the top. If the package requires environmental conditioning (cold storage, controlled humidity), testing is conducted in that conditioned state.
Evaluation Criteria
ASTM D6344 also assesses whether there’s sufficient clearance or internal support between the package wall and its contents to resist deformation from an external impact. The test result is a pass/fail determination against acceptance criteria established beforehand (often drawn from ASTM D4169), along with a record of the energy dissipated by the package during the impact.
Industry Specifications Referencing ASTM D6344
- ASTM D4169: source of acceptance criteria commonly paired with D6344
- ISTA 3B: includes a comparable concentrated impact sequence in its test protocol
- Related package tests: ASTM D5276 (free-fall drop), ASTM D642 (compression)
Also Read – Damage Resistance Testing of Sandwich Constructions: Methods & Standards
Conclusion
Concentrated impact testing fills a gap that standard drop and vibration testing doesn’t cover — localized point impacts rather than whole-package shock. It’s particularly relevant for lightweight corrugated and film-wrapped packaging where a single sharp impact, rather than an overall drop, is the more realistic failure mode.
What types of packaging are commonly tested? The method is particularly suitable for lightweight corrugated boxes, thin-fluted containers, stretch-wrapped loads, and packages vulnerable to localized impacts.
What does a concentrated impact represent? It represents contact from objects such as package corners, equipment edges, or other concentrated forces that strike a small area during transportation or warehouse handling.
How is the test performed? A controlled impactor is released from a specified height onto a selected area of the filled package. The package and its contents are then inspected for damage.
Is ASTM D6344 a pass-or-fail test? Yes. The package passes or fails based on predefined acceptance criteria, such as product damage, package deformation, leakage, or loss of containment.
What is measured during the test? The test records whether the package meets the acceptance criteria and the amount of energy dissipated by the complete package during impact.
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