{"id":54792,"date":"2024-10-17T09:43:19","date_gmt":"2024-10-17T09:43:19","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-e1781-3\/"},"modified":"2024-10-24T17:04:37","modified_gmt":"2024-10-24T17:04:37","slug":"astm-e1781-3","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-e1781-3\/","title":{"rendered":"ASTM-E1781"},"content":{"rendered":"

ASTM E1781-98-e1-Reapproved2003<\/h3>\n

Historical Standard: Standard Practice for Secondary Calibration of Acoustic Emission Sensors<\/h4>\n
\n

ASTM E1781<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This practice covers requirements for the secondary calibration of acoustic emission (AE) sensors. The secondary calibration yields the frequency response of a sensor to waves of the type normally encountered in acoustic emission work. The source producing the signal used for the calibration is mounted on the same surface of the test block as the sensor under testing (SUT). Rayleigh waves are dominant under these conditions; the calibration results represent primarily the sensor’s sensitivity to Rayleigh waves. The sensitivity of the sensor is determined for excitation within the range of 100 kHz to 1 MHz. Sensitivity values are usually determined at frequencies approximately 10 kHz apart. The units of the calibration are volts per unit of mechanical input (displacement, velocity, or acceleration).<\/p>\n

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.<\/p>\n

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/i><\/p>\n

Keywords<\/strong><\/p>\n

acoustic emission; acoustic emission sensor calibration; acoustic emission sensor secondary calibration; sensor calibration<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 17.140.01 (Acoustic measurements and noise abatement in general)<\/p>\n

DOI:<\/strong> 10.1520\/E1781-98R03E01<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Significance and Use
General Requirements <\/td>\n<\/tr>\n
2<\/td>\nRequirements of the Secondary Calibration Apparatus
FIG. 1 <\/td>\n<\/tr>\n
3<\/td>\nCalibration Data Processing
FIG. 2
FIG. 3 <\/td>\n<\/tr>\n
4<\/td>\nFIG. 4
FIG. 5
FIG. 6 <\/td>\n<\/tr>\n
5<\/td>\nExpected Uncertainty <\/td>\n<\/tr>\n
6<\/td>\nProof Testing of a Secondary Calibration System
Typical Calibration Results
Keywords
FIG. 7
FIG. 8 <\/td>\n<\/tr>\n
7<\/td>\nFIG. 9 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

E1781-98(2003)e1 Standard Practice for Secondary Calibration of Acoustic Emission Sensors<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2003<\/td>\n7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":54793,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[267,2637],"product_tag":[],"class_list":{"0":"post-54792","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-01","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/54792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/54793"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=54792"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=54792"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=54792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}