Environment Associates Inc.
Established in 1967, Environment Associates has supported aerospace, military, automotive and commercial manufacturers with a full range of highly technical, developmental, qualifying and production-related testing services. At EA we’ve made a company-wide commitment to maintaining the highest quality standards while providing personalized customer service.
- (818) 709-0568
- (818) 709-8914
- bob@eatest.com
- joshb@eatest.com
- 9604 Variel Avenue
Chatsworth, CA 91311
United States
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Life Cyclic Durability Testing
Environment Associates can provide everything you need for cyclic durability testing and performance fixturing. Services include mechanical cycling to a position or load, fatigue cycling to a fixed load, rotational torque cycling, and simple push/pull cycling. EA can design your fixture with electro-dynamic, air, or hydraulic assistance to mechanically move your part. All of our fixtures can be manufactured to withstand a wide range of temperature, humidity and vibration inputs. If required, forces can be monitored electronically, using a wide variety of inputs (i.e. strain gages, load cells, rotational transducers, thermocouples, shunts, and more). EA can create holding and check fixtures to perform “pre” and “post” evaluation for dimensional issues that may occur during testing. EA can provide fixtures for single tests run internally for EA test labs and can manufacture fixtures to be purchased directly by the customer for their internal use.
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Shock Impact Testing
Environment Associates provides everything you need in drop shock testing — package/container, drop shock/impact systems and electro-dynamic simulated pulses. With our equipment, we specialize in tuned, matched impacts from 20 Gs to 30,000 Gs and from 30 ms to .02 ms in sine, saw-tooth, square-wave, gunfire and rotational cam pulses for almost any set of standards, or for any real-life condition. We can also handle a large range of weights and sizes. EA’s specialists will match the right test, equipment and configurations to your product. We also provide fixture design and special set-up solutions to mount and monitor your product’s functionality during and after testing.
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Thermal Vacuum Testing
When you want to test your product for extreme space conditions, that include temperatures from 155°C to -175°C at space vacuum altitudes, Environment Associates is your solution. Using this test to determine the unique failures of space mechanisms that orbit the earth is key in improving system reliability. Thermal vacuum testing is similar to thermal cycling but adds deep space vacuums for detecting corona/arcing and intermittence and increases a product’s out-gassing. The key failure modes found during this test are: 1) electrical iIntermittence, 2) thermal control issues, 3) arcing, 4) corona, 5) material out-gassing, and more, to determine a product’s flight-worthiness for workmanship and processing issues.
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Pyroshock Testing
The purpose of Pyroshock (pyrotechnic shock) testing is to simulate the high-frequency, high-magnitude shock pulse experienced by an explosive event (such as an impact on a military tank or an explosive deployment charge). Pyroshock testing can expose failures in electronic components that are sensitive to high-frequency pyroshock energy. Common failures include: relay and crystal oscillator chatter, detachment of larger components from the circuit board, hard failures of small circuit components, and the dislodging of contaminants, which cause short circuits. Severe damage to crucial components used in space or in the military can produce critical results, such as loss of life, due to malfunction.
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901 Shock Testing
Environment Associates performs high-impact mechanical shock for all grades, classes and types of Navy ship board machinery, equipment, systems and structures. Our lightweight shock machine is approved by the Naval Surface Warfare Center for use in testing the survivability of Navy shipboard equipment to MIL-S-901D on items and fixturing weighing up to a combined 500 lbs.
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Cyclic Durability (Fatigue) Testing
Today’s products are very complex and designed to minimize costs with the use of FEA software that can project fatigue hot spots. Using your analysis results, we can create a test plan that includes mechanical cyclic durability and environments that will best test your design.
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Thermal Shock Testing
Thermal shock is a very important test for determining the reliability of a product when subjected to sudden changes in temperature and how this stress source can accumulate deterioration or physical damage in performance.
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Vibration Testing
As specialists in dynamic testing, we provide equipment capable of exerting a 6,000 to 40,000 pound force with the capacity to perform closed-loop control from a single input to multiple channel inputs (from 2 to 32) with averaging or notched channel control. Vibration control systems can be programmed for real time monitoring, scheduled for length of time, or level scaled by dB or percentage, or scaled at various durations at different acceleration levels.
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Contaminating Fluid Testing
Products manufactured using plastics, coated and painted surfaces, seals or other "A" surface materials can come in contact with spilled chemicals, sweat, cleaners, lubricants and fuels that can be a potential stress source for a product. These stress sources can cause discoloration, deterioration and de-lamination failures. We can create a list of fluids and/or follow TRCA, DO-160, MIL-STD-810 and ASTM guidelines for a list of products that should be used to test your part's compatibility.
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Acceleration (Centrifuge) Testing
Environment Associates provides centrifuge equipment for acceleration testing. Our acceleration testing equipment measures 3 ft. (0.91 m) and a 6 ft. (1.82 m) lengths that provides constant accelerations of 50 Gs and can handle payloads of 20 lbs. to 50 lbs. The Acceleration Testing is also called G-Force Testing
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Accelerated Aging Testing
Accelerated aging is a testing method used to estimate the useful lifespan of a product when actual lifespan data is unavailable. This occurs with products that have not existed long enough to have gone through their useful lifespan: for example, a new type of car engine or a new polymer for replacement joints or medical products and packaging.
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Climatic Testing
Environmental Test Chamber. Environment Associates' complete Climatic test facilities offer precise simulation of Temperature, Humidity, Altitude, Thermal Vacuum, Salt Fog, Sand and Dust, and Rain as well as many other specialized environments. Microprocessor Control along with calibrated recorded measurements and outstanding attention to detail by our technical staff make for a perfect test everytime.
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Tensile & Compression Testing
If you are looking for a value on the forces needed to assemble a product, or what it will take to overcome a connector latch or other device that mates together, let Environment Associates perform these tests for you. We can test in both tensile and compression on samples that are less than 14" (35.56 cm) wide and can handle product travel less than 54" (137.6 cm), with sensitivities at 0.01 lbs. (4.53 grams) at a wide range of speeds. EA specializes in the determination of connector performance for many different applications and styles.
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Altitude Testing
Our environmental testing facilities simulate altitude testing from -400 ft. (-121 meters) to outer space at 100,000 ft. (30,480 meters) or up to 10-6 Torr (1.3e-7 kPa) with temperature applied as low as -300°F (180C). We can reach these heights within 5 minutes or less. We are capable to handle products measuring up to 4ft X 4ft X 8ft to many standards, including MIL-STD-810 and RTCA DO-160.
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Temperature & Humidity Testing
Environment Associates is outfitted with multiple chambers to suit all types of temperature and humidity testing needs, including: table-top, standard-reaching, fixed or portable walk-in chambers, and if needed, drive-in chambers. All Environment Associates test chambers are equipped with separate data-acquisition equipment for temperature and humidity monitoring. Our temperature and humidity chambers can be readily equipped with specialized data acquisition to digitally record chamber conditions and the test article at multiple data points. Many of our temperature and humidity chambers are equipped with high-performance, maximum-size compressors to produce superior ramp rates equal to or greater than 15°C per minute.
