ASTM E1477 Test Method for Luminous Reflectance Factor of Acoustical Materials by Integrating-Sphere Reflectometers
ASTM E1477 test method is used to determine the luminous reflectance factor of acoustical materials in order to estimate the levels of room illumination. Specimens are tested using a spectrophotometer, a tristimulus colorimeter, and another reflectometer with a hemispherical optical measuring instrument, like an integrating sphere.
Read More
GET STARTED
ASTM E1477 Introduction
ASTM E1477 standard color measurement methods are used to determine the (total) luminous reflectance factor of test specimens using a spectrophotometer, a tristimulus colorimeter, and another reflectometer with a hemispherical optical measuring instrument, like an integrating sphere. The specular component is incorporated, which provides the total reflectance factor condition.
ASTM E1477 Test Method
ASTM E1477 describes the procedure to calculate an acoustical material’s luminous reflectance factor. It applies to products with a surface that is rough or porous and is primarily made for sound absorption.
Service Name
Remarks
ASTM E1477 Testing Lab
Contact US
Procedure for measurement of parameters
Most reflectometers calculate the luminous reflectance factor automatically. For the 1964 (10°) standard observer and standard illuminant D 65 or F 2, choose the proper parameters to produce CIE Y. Use the reflectometer’s greatest available viewing or lighting area. Measure at least three test specimens chosen at random from the panels that make up each sample.
Additional Measurements
To satisfy the approximate tolerance of 0.1 unit of Y, additional test specimens or repeated measurements of each test specimen may occasionally be required.
ASTM E1477 Equipment and Sample Preparation
Specimen details
ASTM E1477 specimens are acoustical materials. Acoustical materials can be found in a variety of configurations, including tiles, panels, sheets, and others.
Specimen dimensions
The general sample size for ASTM E1477 varies depending on the specimen holder of the integrating-sphere reflectometer.
Specimen preparation
Specimens are acoustical materials, and for accurate and reliable findings, the test specimens are placed in the integrating-sphere reflectometer’s specimen holder in the proper orientation.
ASTM E1477 Results and Interpretation
ASTM E1477 outlines the process for calculating the luminous reflectance factor of acoustical materials. The CIE tristimulus value Y for the CIE 1964 (10°) standard observer and the CIE standard illuminant D 65 (daylight) or F 2 (cool white fluorescent) are used to compute the luminance reflectance factor.
Tests Related to ASTM E1477
ASTM E1477 is related to standards such as ASTM E1331 for reflectance factor and color testing by spectrophotometry and ASTM E1345 for reducing the effect of variability of color measurement by use of multiple measurements.
Use of ASTM E1477 in Various Industries
The standard is widely utilized in fields such as pharmaceuticals, food production, biotechnology, microelectronics, health care, and aerospace to assess and quantify airborne particulate matter, guaranteeing product purity and safety.
Materials Commonly Tested with ASTM E1477
It applies mainly in detecting aerosols, dust particles, and airborne contaminants for an air quality measurement that falls within allowable limits and proves safely non-contaminated for production processes.
Common Challenges and Troubleshooting in ASTM E1477 Testing
Issues associated with testing include calibrating instrumentation, proper sampling techniques, and variability in environmental conditions. The technicians may experience problems in identifying particle size or inconsistency in the volume of air sampled. This may be rectified through calibrating equipment and reassessing the sampling procedures. Additionally, adjustment of environmental controls has to be done.
Safety and Best Practices in ASTM E1477 Testing
Testing is centered on safety due to correct handling of equipment, proper use of PPE, and integrity of the cleanroom. All particle counters and flow test equipment should be frequently maintained to ensure accurate results. Entry to the cleanroom should be procedural by the technicians while free from contaminants.
Importance of ASTM E1477
It is one of the highly essential standards in keeping the air quality pharmacy food, and electronics safe, which ensures one monitors cleanly levels within the air correctly and therefore avoids expensive recalls with safety incidents and fosters reliable production of quality products.
Related
FAQ's
Where can I get the astm e1477 tested?
You can share your astm e1477 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e1477 test to various testing techniques.
How much do I need to pay for the astm e1477 test?
Please contact us for a detailed quote for your astm e1477 testing needs. Cost incurred to carry out different astm e1477 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm e1477?
The required number of samples or specimens should comply with the procedure given in the astm e1477 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm e1477 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm e1477 test?
The turnaround time for astm e1477 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the astm e1477 tested?
You can share your astm e1477 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e1477 test to various testing techniques.
MaTestLab Inc. offers accessible, quick, and affordable material testing, product testing, and failure analysis services. We support your on-demand testing and expert consultation needs with the help of our extensive network of material testing laboratories situated in the US and other parts of the world.
MATERIAL TESTING
We offer destructive and non-destructive tests over a range of mechanical, electrical, chemical, thermal, optical, corrosion, radiation, and biological testing methodologies defined by ASTM, ISO and other organizations.
PRODUCT TESTING
We help you evaluate and ensure your product quality and performance with standard and custom-made testing solutions. All the tests are done at well-equipped testing laboratories using standard testing methods for best output and satisfaction.
FAILURE ANALYSIS
Failure analysis ensures high levels of quality in every manufacturing process. We help you with getting the best failure or root cause analysis to determine the cause of the failure. The results help you identify means to prevent failure recurrences.
