MIL-STD-810H Environmental Test Laboratory

Defense Tests

MIL-STD-810H Environmental Test Laboratory

What are MIL Standards?

Military standards developed by the U.S. Department of Defense are generally referred to in different ways:

MIL-STD-810H Environmental Test Laboratory

  • MIL-STD (military standards, military standards)
  • MIL-SPEC (military specifications, military specifications)
  • Unofficially MilSpecs

Whichever way they are named, all these standards are known as the US defense standard. Standardization is useful in ensuring that materials and products used for military purposes meet certain requirements, partnership, reliability, compatibility with logistics systems, and similar objectives related to defense. In fact, these defense standards are used by other official institutions, technical organizations and businesses operating in various sectors besides the Ministry of Defense.

Although different names and different definitions are made, all of these documents are subject to the military standard general assessment, including defense features, manuals and standards. For example, military specifications (MIL-SPEC) define the physical and operational characteristics of a product. In contrast, military standards (MIL-STD) detail the processes and materials to be used in production.

In this context, document types are as follows:

  • MIL-HDBK (Defense Handbook): A document that provides standard procedural, technical, engineering or design information about the material, process, application and methods covered by the defense standardization program. The MIL-STD-967 standard determines the content and shape of the defense manuals.
  • MIL-SPEC (Defense Specification): A document describing the basic technical requirements for military-specific materials or significantly modified merchandise. The MIL-STD-961 standard determines the content and format of the defense specifications.
  • MIL-STD (Defense Standard): A document that specifies uniform engineering and technical requirements for military use or largely modified commercial processes, procedures, applications and methods. Defense standards are five groups in itself: interface standards, design criteria standards, production process standards, standard applications and test method standards. The MIL-STD-962 standard determines the content and format of the defense specifications.
  • MIL-PRF (Performance Specification): It is the document that has the criteria to verify the required results and suitability, but indicates the results in terms of results without specifying methods to achieve the required results. It defines functional requirements for performance specification, factor, environment to work, interface and interchangeability features.
  • MIL-DTL (Detail Specifications): These are the features that specify the design requirements such as the materials to be used, how to fulfill a requirement or how to produce a product. A feature that includes both performance and detail requirements is still considered a detail feature.

What is the MIL-STD-810H Environmental Test Laboratory Standard?

The MIL-STD-810H Environmental Test Laboratory standard is designed as a defense standard among the document types described above. This standard regulates environmental engineering relations and laboratory tests to be applied within the framework of defense tests.

This standard, which was updated in 2019, emerged from the need to ensure appropriate performance, sustainability, repairability and logistical usefulness of military equipment, like other defense standards. Interchangeability and standardization were two very important factors in the design of these standards.

The biggest problem faced by the allied forces in the Second World War was the differences in the dimensional tolerances of the materials. There have been serious problems with American screws, bolts and nuts in fitting British equipment, and often these materials have not been used. In this regard, defense standards provide many benefits such as minimizing the number of ammunition types, ensuring the compatibility of the equipment and machinery used, and increasing the quality during the manufacture of military equipment.

The MIL-STD-810H standard prepared with these approaches covers the planning and engineering aspects of material acquisition processes, taking into account the effects of environmental conditions on these materials at all stages throughout the lifetime of military materials. This standard does not impose design or test specifications, but rather describes environmental compliance processes that result in test methods based on realistic material designs and material system performance requirements.

The MIL-STD-810H standard has been specially prepared for Ministry of Defense applications, but is still adaptable for commercial applications. The main objective of this standard is: to adapt the environmental design and test limits of a material to the conditions it will live for throughout its service life and to provide an explanation of how to apply it to environmental conditions throughout the material acquisition cycle, rather than creating laboratory test methods that strengthen the effects of the environments.

The latest update of the standard acknowledges that the environmental design and testing process has expanded to cover a wide range of administrative and technical interests. Accordingly, this update directs the environmental design and test direction to three main types of users, which are clearly different from each other, although they are closely related:

  • Program managers: These individuals ensure that the proposed concepts and systems are valid and functional in the intended operational environments.
  • Environmental engineering specialists: These individuals prepare life cycle environmental profiles, special design criteria and test programs, and enter the purchasing process to assist in material developer efforts.
  • Design, testing and evaluation community: These are analysts, engineers and operators who make special designs and tests to meet user needs.

The first part of the MIL-STD-810H standard describes the management, engineering and technical roles in the environmental design and test adaptation process. It focuses on the process of adapting the material design and test criteria to the specific environmental conditions that a material will face during its service life.

The second part of the standard in question covers the environmental laboratory test methods to be applied according to the general and specific test adaptation guides described in the first section. Almost all of these methods are not routine applications that cannot be changed. It must be selected and adapted to produce the most suitable test data possible.

The third part of the standard was created by combining the following information and documents:

  • AR 70-38 Research, development, testing and evaluation of material for extreme climatic conditions
  • Environmental factors and standards for atmospheric darkness, climate and terrain
  • MIL-HDBK-310 Global climate data report information for the development of military products

The third section provides planning and guidance for a realistic assessment of climatic conditions as a result of research, development, testing and evaluation of materials used throughout their life cycles in various climatic regions of the world. In this way, it is aimed to develop materials that will perform sufficiently under the environmental conditions likely to be found throughout its lifetime.

Environmental Test Laboratories

Environmental tests consisting of all mechanical, electrical and environmental stress factors affecting electronic equipment, cables and systems are carried out in advanced and accredited test laboratories in a fast, reliable and high quality. Environmental tests of military equipment and materials used for defense purposes are of particular importance.

The following tests are mainly carried out in environmental testing laboratories:

  • Electrical insulation tests (high voltage dielectric test, resistance current, partial discharge, EMC shield)
  • Ethernet and optical tests (ethernet certificate, optical splicing loss and return loss, color and density measurement)
  • Environmental tests (heat, cold, thermal shock, humidity, ice, salt spray, low pressure, liquid test, leak and pressure)
  • Mechanical and dynamic tests (vibration, mechanical shock, compression force tensile strength, torque force, release mechanism)
  • Leak tests (oil leak, air leak, helium leak, waterproof IP67 and IP68)
  • Metrology and dimensional tests (dimensional, profile measurement, thread measurement, hardness measurement, roughness measurement)
  • Rubber and plastic material tests (density measurement, compression set, hardness rupture elongation, tensile strength, dielectric rupture)
  • Coating tests (elemental composition of coating metallographic section, coating adhesion and corrosion, x-ray measurement)
  • Usage tests (automatic testing of insulation, dielectric strength stress resistance)

Our organization also provides MIL-STD-810H Environmental test laboratory services to businesses within the framework of laboratory testing services.

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