Specimens in salt accelerated corrosion tests are sprayed with a salt solution twice per week. Q-Lab Florida has the most southerly exposure of any outdoor weathering facility in the United States. They can hold large, 3D parts like instrument panels. These AIM Boxes are used to test materials for automotive interiors. Using a "black box" increases the temperature of the specimens even more. High temperatures are a major factor in Florida exposure tests. Sub-frames with window glass protect interior materials tested in "under glass" exposures. Q-Lab Florida maintains the capability to mount specimens in almost any orientation including vertical, which is most appropriate for wood siding shown here. Q-Lab Florida has more specimens on test than any other outdoor weathering facility in the world.Ĭurved automotive body panels are great candidates for outdoor exposure testing in Florida. Even if you perform accelerated laboratory weathering testing, you should also perform natural outdoor testing. Furthermore, many companies test their products outdoors in both Florida and Arizona. Natural exposure testing is an essential part of any weathering and light stability test program. Salt Accelerated Corrosion - SCAB (ASTM D6675).Natural Atmospheric Corrosion (ASTM G50).Direct & Under Glass Exposures (ASTM ASTM G7, ASTM G24, ASTM D1435).Visit our Standards Page or contact Q-Lab for a more complete list. Florida Weathering & Corrosion Test Methodsįlorida outdoor exposure testing meets a variety of weathering and corrosion test methods, a small portion of which are listed below. For a full description, see LL-9025 - Outdoor Weathering Exposure Procedures, or contact Q-Lab to discuss which option is suitable for your test program. The specific type of specimen mounting technique and exposure angle both have a significant effect on solar energy dosage, specimen temperature, and time of wetness. In addition, specimens may be placed near or under vegetation to promote growth. Mildew Tests: In this Florida exposure, panels are typically positioned at a 90º north to reduce sunlight, decrease surface temperatures, and increase moisture.Salt-Accelerated Outdoor Corrosion: Direct exposures with salt spray can produce fast and realistic corrosion, particularly for coated metals.AIM Box (Automotive Interior Materials): These under glass exposures simulate the environment inside an automobile and are suitable for mounting larger components like dashboards.Under glass black box exposures are used to test interior automotive materials. Black Box:These tests reproduce conditions found on the horizontal surfaces of a vehicle, including higher temperatures and wet times.Specimens are behind 3 mm window glass which will filter out short-wave UV. Under Glass: These exposures are used to test interior-use materials, such as textiles and printing inks.Different exposure angles and mounting methods are used for different applications. Specimens are securely mounted with their front surface facing the sun. Direct Exposure:Direct exposures are used to test many exterior-use materials, such as industrial coatings.Various specimen mounting and exposure techniques are available for natural outdoor exposure testing in Florida: Biodegradation, including mold, mildew, fungus and algaeĪ Variety of Different Exposure Techniques.Moisture sensitivity of products like coatings, building materials, and some plastics.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |