{"id":103878,"date":"2024-10-18T13:49:06","date_gmt":"2024-10-18T13:49:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-c384-2004-2\/"},"modified":"2024-10-24T21:28:10","modified_gmt":"2024-10-24T21:28:10","slug":"astm-c384-2004-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-c384-2004-2\/","title":{"rendered":"ASTM-C384 2004"},"content":{"rendered":"<\/p>\n

1.1 This test method covers the use of an impedance tube, alternatively called a standing wave apparatus, for the measurement of impedance ratios and the normal incidence sound absorption coefficients of acoustical materials.<\/p>\n

1.2 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

1.3 The values stated in SI units are to be regarded as the standard.<\/p>\n

PDF Catalog<\/h4>\n\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
Summary of Test Method
Significance and Use <\/td>\n<\/tr>\n
2<\/td>\nApparatus <\/td>\n<\/tr>\n
3<\/td>\nSampling
Test Specimen Preparation and Mounting
Description of Standing Wave Pattern in Tube <\/td>\n<\/tr>\n
4<\/td>\nProcedure
FIG. 1 <\/td>\n<\/tr>\n
6<\/td>\nCalculation of Normal Incidence Sound Absorption Coefficient and Impedance Ratio
Report
Precision and Bias
Keywords <\/td>\n<\/tr>\n
7<\/td>\nA1. EVALUATION OF ANECHOIC WEDGES
A1.1 Scope
A1.2 Terminology
A1.3 Summary of Test Method
A1.4 Significance and Use
A1.5 Apparatus
FIG. A1.1 <\/td>\n<\/tr>\n
8<\/td>\nA1.6 Test Specimen Mounting
A1.7 Test Procedure
A1.8 Report
A1.9 Precision and Bias <\/td>\n<\/tr>\n
9<\/td>\nA2. LABORATORY ACCREDITATION
A2.1 Scope
A2.2 Summary of Procedures
A2.3 Reference Tests
REFERENCES <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

C384-04 Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2004<\/td>\n9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":103879,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1266,2637],"product_tag":[],"class_list":{"0":"post-103878","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-120-20","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\/103878","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\/103879"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=103878"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=103878"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=103878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}