Project Introduction

Drop tests are categorized into packaged drop tests and bare unit drop tests. Packaged drop tests primarily evaluate the product's ability to withstand accidental drops during transportation and storage; bare unit drop tests focus on the product's resistance to accidental drops during normal use. Packaged drop tests can also reflect the protective capability of the packaging when subjected to vertical drops.

Drop height, drop frequency, and drop direction reflect the rigor of the test. Different products have varying international standards for drop methods and drop height requirements. For handheld devices (such as smartphones, MP3 players, etc.), most drops occur between 100cm and 150cm. IEC recommends that handheld devices weighing ≤2kg should withstand a 100cm drop without damage, while MIL suggests a 122cm drop height. Intel advises a drop height of 150cm for handheld devices like smartphones.

According to the reference standards, the fall surface shall be a smooth, hard, rigid surface made of concrete or steel, or, if necessary, other surfaces such as marble.

Packaging Drop Test

General requirements for packaging drop tests typically involve a free-fall from one corner and three sides, as well as all six faces.

Corner Drop: After the drop, the test corner impacts the contact plane.

Edge Drop Test: The sample is tilted to a horizontal angle of 20° and then elevated to the test height before being dropped, where its edge impacts the contact plane.

Flat Drop: The test sample must fall directly onto the contact surface upon impact.

The company's news content does not include any Chinese text, so it will be returned as is: "The determination of the strength of outer cases or inner boxes and the integrity of product packaging in terms of whether they meet quality requirements."

The Purpose of裸机Drop Test

The bare machine drop test is designed to assess the product's ability to withstand throwing and falling during use. The method of releasing the test sample should allow it to fall freely from a suspended position, minimizing interference during the release.

ASTM standard testing equipment requirements: The floor must be covered with a 3.0mm (1/8in) thick rubber mat, have a concrete thickness of 64mm (2.5in), and an area of at least 3㎡.

· EN71 standard testing equipment requirements: The instrument should be dropped onto a surface covered with a 4mm thick steel plate, which is coated with a 2mm thick layer having a Shore hardness of 75±5A, and placed on a non-flexible flat surface.

· GB6675 standard testing equipment requirements: The impact surface should be composed of ethylene polymer sheet material with a rated thickness of approximately 3mm, attached to concrete with a thickness of at least 64mm. The cover surface should reach a Shore hardness of A80 ± 10 degrees, with an area of at least 0.3㎡.

Method Standards

GB/T2423.8 "Environmental Tests for Electrical and Electronic Products - Part 2: Test Methods - Test Ed: Free Fall"

IEC60068-2-32: Method for Free Fall Testing

GB-T4857.5 Method for Drop Test of Packaging for Transportation Packaging Units

ASTM D 5276-98(2009)