ASTM G155 PDF

Before you can design and manufacture these products, you need to be sure the materials you use will endure the test of time and wear. ASTM G was created to help you determine how your materials will react to weathering so that you can move forward in your design or adjust your products as needed. But for the process to be effective, you must work with a lab that knows how to control every factor of the test to give you the most accurate results possible. VTEC Laboratories offers this expertise. We offer a range of ASTM testing services as well as custom test capabilities that we can design to your industry-specific specifications. ASTM G outlines best practices for xenon arc testing, which is a weathering test best performed on non-metallic materials built for outdoor, bright-light uses.

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UV Testing When it comes to UV exposure testing , many tests, standards and methods exist, and Micom is happy to offer numerous different UV tests that, alone and combined, help our customers better understand their products. And while these two tests are similar, there are a few key differences in their application and purpose that can help make either a more appropriate choice for your needs.

Both of these light sources are able to accurately predict, on an accelerated basis, the effect sunlight will have on a product. And while both of these practices can be used to simulate indoor and outdoor sun exposure, xenon arc light is more similar to natural sunlight and, for this reason, is often a good choice for testing outdoor products. With this in mind, ASTM G, making use of a fluorescent light apparatus, often becomes the preferred choice for indoor UV testing, such as exposure to sunlight through a window.

If this is your intended purpose, you may consider our ASTM G testing with its xenon arc exposure. Both of these UV exposure test methods offer great results and will, via accelerated weathering, give you a good indication of how well your product will perform under natural sunlight exposure.

This decision tree will help you quickly remember which UV Test you will need: Disclaimer All of the information and opinions contained in this blog are made with the information, and the understanding that we have reviewed at the time of publishing. However, despite our efforts, we do not offer any guarantee of their accuracy, thoroughness of our investigation or validity.

The author of this blog is not liable for any inaccuracies or any losses or damages that may result from the use of the information or data contained herein. This blog has not been reviewed or verified for its accuracy by any peer group associates prior to publication. Related Posts.

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ASTM G154 and G155 Explained

More G These exposures may include a means to introduce moisture to the test specimen. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure. Alternatively, the exposure may simulate the effects of sunlight through window glass. Typically, these exposures would include moisture in the form of humidity.

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The Difference between ASTM G154 and G155 and Which is Right for You

UV Testing When it comes to UV exposure testing , many tests, standards and methods exist, and Micom is happy to offer numerous different UV tests that, alone and combined, help our customers better understand their products. And while these two tests are similar, there are a few key differences in their application and purpose that can help make either a more appropriate choice for your needs. Both of these light sources are able to accurately predict, on an accelerated basis, the effect sunlight will have on a product. And while both of these practices can be used to simulate indoor and outdoor sun exposure, xenon arc light is more similar to natural sunlight and, for this reason, is often a good choice for testing outdoor products. With this in mind, ASTM G, making use of a fluorescent light apparatus, often becomes the preferred choice for indoor UV testing, such as exposure to sunlight through a window.

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ASTM G155 Testing Lab

When rays of sunlight—particularly UV rays—bombard a surface, they degrade smaller pigment particles, changing the surface color and creating a chalky effect. Cracking, peeling, de-glossing, oxidation, and tensile weakening are additional outcomes of exposure; sometimes such deterioration can even occur through window glass. Moisture takes its own toll on surfaces, and the combination of sunlight and moisture can amplify damage, costing millions of dollars of depreciation each year. The ASTM G and G tests empower manufacturers to design products that can withstand exposure to sunlight and moisture. Ultimately, the most realistic way to test for weathering is to allow the product to degrade in real time, with outdoor testing panels. In the U. Due to time constraints, however, many producers employ the G and G laboratory chamber tests for reliable exposure results in shorter time periods.

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