Environmental Exposure Testing

Fluid Contamination Testing

Fluid Contamination Testing (also known as Fluids Susceptibility Testing) evaluates how different fluids can affect equipment, particularly the breakdown of materials or coatings that may occur during an item’s service life.

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Testing Categories

Our chambers can test the following fluid types:

Cleaning fluids

Coolant dielectric fluids

De-icing/Anti-freeze fluids

Disinfectants

Fire extinguishants

Fuels

Hydraulic fluids

Insecticides

Lubricating oils

Solvents

Testing Capabilities

Dayton T. Brown, Inc. has specialized chambers to test equipment exposed to a wide range of fluids.

Testing Standards

MIL-STD-810, Method 504

RTCA/DO-160, Section 11

Solar Radiation Testing

Evaluates the impact of direct sunlight on materials, determining both the heating effects and photochemical (actinic) effects caused by solar exposure.

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Testing Categories

Heating Effects Testing 

Assesses if solar heat will jam or loosen moving parts, affect material strength, seal integrity, cause premature electrical contact actuation, or result in blistering, peeling, or delamination of paints, composites, and adhesives.

Actinic (Photochemical) Effects Testing  

Assesses the fading of fabric and plastic colors, chalking and fading of paints, and the deterioration of natural and synthetic elastomers and polymers.

Testing Capabilities

Dayton T. Brown, Inc. is equipped with a chamber that simulates the effects of solar radiation for a variety of test items.

Small chamber measures 24 in. x 24 in.

Larger chamber measures 8 ft. x 16 ft.

Supports testing across a range of commercial and military industry requirements.

Testing Standards

MIL-STD-810, Method 505, Procedure I

MIL-STD-810, Method 505, Procedure II

ATPD 2352

Fungus Testing

Assesses an item’s vulnerability to fungus growth in hot and humid conditions. This testing is essential for products exposed to environments where fungal contamination can degrade materials, affect performance, or compromise safety.

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Testing Categories

General Fungus Growth Testing

Assesses the potential for fungus growth on a variety of materials and items in a controlled, humid environment.

Fungus Impact on Performance Testing

Focuses on how fungus contamination may impact the functionality and reliability of equipment.

Testing Capabilities

With our controlled testing environments and expert oversight, Dayton T. Brown, Inc. ensures that products are rigorously evaluated for susceptibility to fungus, protecting their long-term durability and reliability.

Several fungus chambers measuring 4 ft. x 4 ft., allowing flexibility in testing different-sized items.

Can accommodate sub-samples from larger test items for detailed analysis.

To ensure that the proper test conditions have been maintained, 24/7 oversight and control samples are included in all fungus tests. After testing, a certified micro-biologist inspects the test item(s).

Testing Standards

MIL-STD-810, Method 508

RTCA/DO-160, Section 13

Salt Fog Testing

Dayton T. Brown, Inc. offers testing to simulate corrosive marine environments, evaluating how products withstand prolonged exposure to salt mist. This testing is crucial for equipment used in coastal or marine conditions, where corrosion can significantly impact performance and longevity.

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Testing Categories

Standard Salt Fog Testing

Simulates salt mist exposure to replicate marine conditions.

Salt Fog with SO2 Testing

Incorporates sulfur dioxide (SO2) to simulate more aggressive corrosive environments.

Testing Categories

We have four specialized chambers to accommodate a wide range of test item sizes:

4 ft. Salt Fog Chamber: Suitable for smaller items (4 ft. x 4 ft. x 4 ft.).

6 ft. Salt Fog and SO2 Chamber: For medium-sized items (6 ft. x 4 ft. x 4 ft.).

12 ft. Salt Fog and SO2 Chamber: Accommodates larger items (12 ft. x 4 ft. x 4 ft.).

21 ft. Salt Fog Chamber: Capable of testing entire vehicles (21 ft. x 4 ft. x 4 ft.).

Testing Standards

MIL-STD-810, Methods 509 and 518 (Salt Fog Testing)

RTCA/DO-160, Section 14 (Salt Fog Testing)

ASTM G85, Annex A4 (Salt Fog with SO2 Testing)

Sand & Dust Testing

Dayton T. Brown, Inc. specializes in Sand and Dust Testing, recreating harsh desert storm and airblast conditions to evaluate product durability and performance. This testing is essential for equipment used in arid environments, ensuring they can withstand exposure to sand and dust without compromising functionality or reliability.

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Testing Categories

Sand Testing

Assesses equipment performance and durability in environments with blowing sand, ensuring its ability to function and be stored without degradation.

Dust Testing

Evaluates the resistance of equipment to dust infiltration, ensuring seals, filters, and moving parts remain functional in dusty environments.

Testing Capabilities

Sand Chamber tests items up to 4 ft. x 4 ft. x 4 ft.; larger items can be tested in sample sections.

Simulates sand concentrations of 2.2 g/m³, 1.1 g/m³, and 0.18 g/m³.

Operates at wind speeds up to 65 MPH.

Equipped with temperature and humidity controls to replicate realistic conditions.

Dust test chamber measures 13 ft. x 4 ft. x 4 ft., with an additional 4 in. clearance around the test item.

Uses silica flour dust per MIL-STD requirements.

Includes a settling dust chamber for testing in vacuum environments and with IP-rated products.

Testing Standards

MIL-STD-810, Method 510, Procedure II (Sand Testing)

RTCA/DO-160, Section 12 (Sand Testing)

MIL-STD-810, Method 510, Procedure I (Dust Testing)

RTCA/DO-160, Section 12 (Dust Testing)

Explosive Atmosphere Testing

Explosive atmosphere testing, also known as hazardous area testing or explosion proof testing, assesses if equipment can operate safely in environments with flammable gases, vapors, liquids, or combustible dusts without causing an explosion, or to show that the design is able to prevent the explosion from spreading outside of the enclosure of the equipment. The tests are performed in a closed explosion-proof chamber.

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Testing Categories

Explosive Atmosphere

Assesses equipment in normal operation will not ignite the fuel/air mixture at altitudes from 40,000 ft. to site level at high operating temperatures.

Explosive Containment

Assures that if the fuel/air mixture is ignited within the test item, it will not propagate to the external fuel/air mixture and ignite.

Testing Capabilities

Explosive Atmosphere chamber tests items up to 24 in. H x 30 in. W x 50 in.

Top temperature is 185⁰F/85⁰C

Testing Standards

MIL-STD-810, Method 511.5

RTCA/DO-160, Section 9

Customer specifications

Need Expert Testing & Engineering Solutions?

Connect with Dayton T. Brown, Inc.  and let our experts guide you!

Why Choose DTB for Testing & Engineering?

Dayton T. Brown, Inc. is the largest independent testing laboratory in the U.S., equipped to handle large projects such as full-scale aircraft/spacecraft static and fatigue testing. Whatever your testing needs we deliver unparalleled expertise, cutting-edge technology, and tailored solutions for your most demanding challenges.

DTB Services

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Technical Publications

We provide comprehensive technical publication services, offering expert technical writing, illustration, data conversion, and systems integration. Our team specializes in mechanical, electrical, and hydraulic systems, and we are adept at creating and managing technical documentation to meet evolving standards like S1000D. From authoring and graphics to legacy data conversion and 3D model integration, we deliver precise, tailored solutions to support your technical information needs.

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Product Support &
Logistics

Our logisticians are experienced in the preparation of logistics management information and critical logistics deliverables such as level of repair analysis & provisioning, maintenance planning & reliability, and logistics consulting – ensuring efficient, cost-effective support for military, commercial, and government programs.​

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Mission Systems

SCIFs, Shipping Containers, Material Management Support

We specialize in designing and integrating advanced products and intelligent systems such as mobile and transportable SCIFs, satellite shipping containers, and material procurement support for your critical missions.