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ASTM Revises Test Method for Measuring Roll
Wave Distortion C1651 - Standard Test Method for Measurement of Roll Wave Optical Distortion in Heat-Treated Flat Glass has been revised to C1651-11 developed by Committee C14.11, ASTM BOS Volume 15.02. This test method is a procedure for determining the peak-to-valley depth and the wavelength of roll wave in flat glass and then calculating the optical distortion resulting from that roll wave. Peak-to-valley measurements provide a means of monitoring the roll wave distortion in a heat processed glass product. Measured peak-to-valley depth provides information required by some specifiers of heat-treated glass products. Subscribe to USGlass magazine. |
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