MIL-STD-810 Sand and Dust Testing

March 5, 2021

Latest company news about MIL-STD-810 Sand and Dust Testing

Sand and dust environments include a wide range of materials and particulate size distributions. As a result, this method includes two procedures: the dust procedures and the sand procedures. Dust ingress testing evaluates the effectiveness of filters and of material at resisting the effects of dust. Sand ingress testing evaluates the ability of material to withstand blowing sand conditions without degrading in performance or maintainability.

 

Use this Method to evaluate mechanical, optical, electrical, electronic, electrochemical, and electromechanical devices exposed to sand or dust atmospheres.

 

What are the Differences in Procedure for Solid Particle Enclosure Tests?
Procedure I, blowing dust, evaluates the susceptibility of material to concentrations of blowing dust. Procedure II, blowing sand, evaluates the susceptibility of material to the effects of blowing sand. While both procedures involve sand and/or dust, they differ on the basis of particle size and type of movement. For each procedure the test temperature, sand and/or dust composition, test duration, and air velocity must be specified.

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How Should Test Results Be Analyzed?
1.After blowing dust enclosure ingress testing, analyze any failure of a test item to meet the requirements of the material specifications. Consider related information such as determining if:

 

Dust has penetrated the test item and caused binding, clogging, seizure or blocking of moving parts, non-operation contacts or relays. Or if electrically conductive bridges with resulting short circuits have formed.
Air filters are clogged restricting airflow.
Abrasion of the test item exceeds the specified levels.
The test item operates as required.
 

2.After blowing sands enclosure ingress testing, analyze any failure of a test item to meet the requirements of the material specifications. Consider related information such as, determining if:

 

Abrasion of the test item exceeds the specified requirements.
The test item operates as required.
Protective coatings or seals were compromised.

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