Exposure Testing Device provides ultra-accelerated weathering.
Press Release Summary:
Using cool mirror technology, Ultra-Accelerated EMMA provides 10-12 yr of equivalent radiation exposure as would be received in South Florida in single year. Device tracks sun while concentrating reflected sunlight on test specimens in 6 x 30 in. target area. Mirror has very high reflectance in UV and near visible wavelength while attenuating reflectance in longer wavelength visible and IR portions of spectrum, allowing for high concentrations of UV energy without excessive heating of samples.
Original Press Release:
Atlas Introduces UA-EMMA
The Latest Innovation in Ultra-Accelerated Weathering
Chicago, IL — Atlas Material Testing Technology, the global leader in weathering testing equipment and services, is excited to introduce its latest advancement in exposure testing, the Ultra-Accelerated EMMA (UA-EMMA). This new outdoor testing device provides approximately 10-12 years of equivalent radiation exposure as would be received in South Florida in a single year. Atlas developed this new solar concentrator technology utilizing the same "cool mirror" technology used in its Ultra-Accelerated Weathering System (UAWS).
Similar in concept to Atlas' Equatorial Mount with Mirrors for Acceleration (EMMA®) technology, the new ultra-accelerated EMMA device tracks the sun, while concentrating reflected sunlight on test specimens mounted in a target area. The difference however, lies in the new patented mirror system used in the UA-EMMA, which has very high reflectance in the UV and near visible wavelength ranges while attenuating reflectance in the longer wavelength visible and IR portions of the solar spectrum. This leading-edge technology allows for very high concentrations of UV energy without excessive heating of test samples.
Typically, high-irradiance solar concentrators or laboratory solar simulators built for ultra-high-irradiance durability testing often cause test samples to overheat resulting in unnatural material changes compared to those experienced in an end-use environment. Atlas' new technology differs in that it simultaneously fulfills three requirements critical for ultra- accelerated exposure testing:
Allows for the expose of many different types of materials to ultra-high UV irradiances
Maintains high fidelity to the natural solar UV spectrum
Keeps specimens at acceptable exposure temperatures
The UA-EMMA employs twenty focusing mirrors arranged as parabolic facets to variably concentrate UV energy on a target area approximately 15 cm X 76 cm (6 in x 30 in). UA-EMMA is also fully compliant with existing industry standards such as ASTM G90 – 10 Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight.
Materials/products that are ideal candidates for UA-EMMA testing:
Materials that require a long service life
Transparent and glazing materials
Temperature sensitive materials such as PVC
Coatings applied to metal panels
Materials that perform well in EMMA® or EMMAQUA® exposure testing
For more information on UA-EMMA testing, please contact Atlas at: atlas.info@ametek.com.
About Atlas Material Testing Technology - www.atlas-mts.com
Atlas is a recognized leader in material testing, offering a complete line of instruments and services for accelerated and natural weathering. In addition, the Atlas Consulting Group helps clients from various industries, including photovoltaics, coatings, plastics, textiles, automotive and cosmetics, to develop the best weathering processes for their products.
In November 2010, Atlas joined AMETEK, Inc., a global leader in electronic instruments and electromechanical devices, as a unit of AMETEK Measurement & Calibration Technologies (M&CT). AMETEK M&CT is a division within AMETEK's Electronic Instruments Group (EIG), a recognized leader in advanced monitoring, testing, calibrating and display instruments.
Atlas Material Testing Technology is ISO 17025 and ISO 9001:2008 registered. Atlas products are designed and manufactured to conform to international, national and industry standard test methods including ISO, ASTM, DIN, JIS and numerous others.
