August 23, 2021 - August 26, 2021
Boxborough, MASource: Equipment Reliability Institute
MIL-STD-810 is a U.S. military standard for environmental engineering considerations and laboratory testing. It is a Tri-Service (U.S. Air Force, Army, and Navy) standard for the design of military equipment. This four-day class focuses on the purpose of each test, the equipment required to perform each test, and the methodology to correctly apply the specified test environments. This class is applicable to ANY testing done to environmental test standards, including DO-160, IEC specifications, and all other documents which provide test methodology for environmental testing. The test methods explained and taught in this class apply to environmental testing of ANY equipment, whether it is intended for military/aerospace, commercial, or consumer use.
Vibration and shock methods are covered together. We overview sine and random vibration, classical waveform shock testing, drop testing, and shock response spectrum testing. We include instrumentation, vibration equipment, control systems, and fixture design.
We discuss each climatic test individually, focusing on requirements, origination, equipment required, test methodology, and understanding of results.
Class members will tour a lab that performs the full spectrum of 810H tests daily.
The lab visit will include a demonstration of the vibration test equipment and test techniques discussed in class. An instrumented resonant structure is excited first with slowly sweeping constant acceleration sine vibration. As the frequency increases, the observers will directly see the decrease in displacement. The sine vibration demonstration will be followed by an all-frequencies-simultaneous random vibration. Responses are compared.
500.6 Low Pressure (Altitude)
501.7 High Temperature
502.7 Low Temperature
503.7 Temperature Shock
504.3 Contamination by Fluids
505.7 Solar Radiation (Sunshine)
509.7 Salt Fog
510.7 Sand and Dust
511.7 Explosive Atmosphere
515.8 Acoustic Noise
518.2 Acidic Atmosphere
519.8 Gunfire Shock
520.5 Combined Environments
521.4 Icing/Freezing Rain
522.4 Ballistic Shock
525.2 Time Waveform Replication
526.2 Rail Impact
528.1 Mechanical Vibrations of Shipboard Equipment (Type I – Environmental and Type II – Internally Excited)
Classroom discussion is supported by projected visuals and video clips. Commencing with a review of basic vibrations, we will explore vibration measurements and analysis. We’ll compare sinusoidal vs. random vibration testing systems, specifications, standards, and procedures. We will emphasize vibration and shock test fixture design, fabrication, experimental evaluation, and usage. We will also study shock measurement, shock response spectrum (SRS), and shock testing.
Climatic testing will be looked at in great detail, emphasizing required equipment and instrumentation, correct interpretation of specifications, and hints to ensure that the tests are brought to a successful conclusion.
In addition to the detailed observations of chambers in the lab, numerous photographs of general purpose and special purpose chambers are provided, such as solar radiation and rain. Along with “catalog photos” of chambers, the instructor shows unpublished factory in construction via photos of chambers.
The course emphasizes topics you will use immediately. Suppliers to the military services protectively install commercial-off-the-shelf (COTS) equipment in our flight and land vehicles and in shipboard locations where vibration and shock can be severe. We laboratory test the protected equipment (1) to assure maximum equipment survival and possible combat and (2) to meet commercial test standards, IEC documents, and military standards, such as STANAG or MIL-STD-810H, DO-160, etc. Few, if any, engineering schools teach about such protection or such testing. Hence this specialized course.
Comparison of 810 Revisions
MIL-STD-810H is the latest revision. MIL-STD-810 has been revised roughly every eight years since it was introduced in 1962. Some of the earlier revisions are occasionally cited in procurement contracts. This course covers ALL the test methods of the latest revision. The last method numbers are found in the final column of this available-for-download PDF file. The instructor will also discuss commonly specified older legacy methods.