Environmental Exposure Testing: Your Q3 Preparation Guide
Ghesquiere Plastic Testing, Inc. (GPTesting) | 20450 Harper Avenue, Harper Woods, MI 48225 | A2LA Accredited | Certificate No. 0079.01 | ISO/IEC 17025:2017 | info@gptesting.com | 313-885-3535 | gptesting.com
Environmental exposure testing for Q3 automotive program launches must be scheduled in April and May. UV xenon weathering programs run one to twelve weeks. Humidity conditioning requires extended soak time before specimens are ready to evaluate. We run xenon weathering, thermal cycling, combined humidity, and corrosion exposure testing in Harper Woods, Michigan, accredited under ISO/IEC 17025:2017 (A2LA Certificate No. 0079.01).
Q3 is closer than most engineers realize
July and August program launches are already on engineering calendars. Environmental tests are not fast. A xenon weathering program takes one to twelve weeks from sample receipt to final report. Thermal cycling commonly takes 1 week. If testing starts in April or early May, results arrive in time for Q3 decision gates. If it starts in June, results arrive after those gates have closed. Our environmental exposure capabilities cover all the methods described in this guide.
What xenon arc weathering is and why it is required
Xenon arc testing simulates the full solar spectrum, including UV, visible, and infrared radiation, with controlled temperature and humidity cycling. It is the most widely specified accelerated weathering method for automotive exterior trim, interior components, coated surfaces, and interior textiles.
OEM methods include GMW14162 Method D, SAE J2412, SAE J2527, Ford FLTM BO 116-01, Rivian RTS.1744, and Tesla TP-0000701. Running 1,000 hours under the wrong cycle does not satisfy a specification requiring the correct one. Typical elapsed time: 1 to 12 weeks.
How combined temperature and humidity testing works
The most aggressive moisture condition is not constant humidity but cyclic exposure, where humidity fluctuates with temperature changes, replicating what vehicles actually experience. Under-hood components cycle between high heat and ambient conditions daily. Interior materials in parked vehicles can reach 80 degrees Celsius with high relative humidity before cooling overnight.
We run combined testing per GMW14124, LP7M070, and OEM-specific humidity cycles. Typical elapsed time: one to six weeks.
What environmental tests should run in parallel
Running xenon weathering, thermal cycling, and corrosion testing concurrently on separate sample sets can reduce total validation time by up to 50 percent compared to sequential programs. This requires advance scheduling coordination and sufficient sample quantity. Read our temperature cycling post for the full breakdown on how cycling programs are structured alongside weathering programs.
Download the Testing Readiness Checklist to confirm sample quantities, conditioning requirements, and documentation are in order before your samples arrive.
If you are looking at your Q3 schedule and the numbers do not add up, the conversation is easier to have now than in June.
Lock in your Q3 environmental testing schedule. Request a quote now at gptesting.com
What environmental tests are required for automotive material qualification?
Automotive material qualification typically requires UV xenon weathering, Heat Aging, Humidity Aging, thermal cycling or thermal shock (combined temperature and humidity testing), and/or salt spray corrosion testing. The specific tests depend on the component application, vehicle location, and OEM specification package. GPTesting runs all of these within its accredited ISO/IEC 17025:2017 scope.
How long does UV xenon arc weathering testing take?
Xenon arc weathering programs run 1 day to 20 weeks for most OEM specifications, the most common are three days to twelve weeks. Including sample conditioning, post-exposure measurement, and report preparation, the complete program typically takes 1 to 12 weeks from sample receipt. OEM-specific methods including GMW14162 Method D, FLTM BO 116-01, SAE J2527, and SAE J2412 each define specific cycle programs and exposure durations.
What is combined temperature and humidity testing for automotive components?
Combined temperature and humidity testing exposes specimens to elevated temperature and controlled relative humidity simultaneously, replicating the cyclic wet/dry and heat/cool conditions vehicle components experience in service. Testing typically takes one to twelve weeks.
We have three Q3 programs. Can we run weathering, thermal cycling, and corrosion simultaneously?
Yes. Running xenon weathering, thermal cycling, and corrosion testing concurrently on separate sample sets can reduce total validation time by up to 50 percent compared to sequential programs. This requires sufficient sample quantity and advance scheduling coordination with the lab.
