1、 The following commercial specification is adopted from the military document. Revision A included all known accepted revisions, amendments, notices, and Department of Defense (DoD) engineering changes previously developed for this item. Revisions B and forward include changes adopted to reflect tec
2、hnology and design evolution. SHRINKAGE OF CORDAGE, BOILING WATER METHOD; DETERMINATION OF The Parachute Industry Association makes this document available for use by Industry and Government organizations that wish to apply this specification to their products. 1. SCOPE 1.1 Scope. This method is int
3、ended for determining the residual shrinkage of cordage. 2. TEST SPECIMEN 2.1 Test Specimen. The specimen shall be a single length of 24 inches (610 mm) cut from the sample unit. 3. NUMBER OF DETERMINATIONS 3.1 Number of determinations. Unless otherwise specified in the procurement document three de
4、terminations shall be made from each sample unit. 4. APPARATUS 4.1 Container. A container of suitable size so that the required specimens can be completely immersed in water when being tested. 4.2 Weights. Weights of suitable size that will cause the specimen to be completely submerged. 4.3 Measurem
5、ent stick or metal tape. Yardstick, meterstick, metal tape or other suitable measuring device graduated in increments of 1/16 inch (1 mm). PIA-TEST METHOD-6010C 25 November 2013 Superseding PIA-TEST METHOD-6010B 15 September 2007 DISTRIBUTION STATEMENT: All Rights Reserved. No Part of this publicati
6、on may be reproduced without prior written permission from Parachute Industry Association. Additional copies may be purchased on-line from PIA Specification and Products at: . Copyright Protected: Do Not Copy!PIA-TEST METHOD-6010C 4.4 Marking medium. Pen marker containing water-insoluble ink. 4.5 Wh
7、ipping twine or tape. 4.6 Oven. Circulating-air oven capable of maintaining the required temperature within 4F (2C). 5 PROCEDURE 5.1.1 Unless otherwise specified in the procurement document, the specimens shall be brought to equilibrium under Standard Atmospheric Conditions in accordance with ASTM D
8、 1776 Standard Practice for Conditioning and Testing Textiles. 5.2 The cord shall be securely whipped or taped at proper intervals prior to cutting to permit the removal of 24 inch (610 mm) specimens without raveling or fraying the ends. 5.3 The specimen shall be laid out on a flat surface and strai
9、ghtened out, so that there are no twists or turns, and an 18- inch (457 mm) length shall be marked off on the specimen a minimum of 2 inches (51 mm) from either end. It shall be marked with water-insoluble ink or other suitable marking medium. 5.4 The weights shall be attached to the specimen and th
10、e whole assembly immersed in boiling water for 15 minutes. 5.5 At the end of the immersion period, the specimen shall be air-dried for at least 4 hours or dried in a circulating air oven at a temperature of 185F (85C) for 1/2 hour. 5.6 After drying, the specimen shall be returned to equilibrium unde
11、r Standard Atmospheric Conditions in accordance with ASTM D 1776 Standard Practice for Conditioning and Testing Textiles, and the distance between the marks measured for change in length to the nearest 1/16 inch (1 mm). 5.7 Calculations. 5.7.1 The calculation for the percent residual shrinkage shall
12、 be made as follows: Residual shrinkage, percent = 18 inches (457mm) - E x 100 18 inches (457 mm) Where: E = measurement between marks after immersion in boiling water and return to equilibrium. 6. REPORT 6.1 The residual shrinkage shall be the average of 3 determinations, calculated to the nearest
13、0.5 percent. Page 2 of 3 Copyright Protected: Do Not Copy!PIA-TEST METHOD-6010C 6.2 Each individual value used to calculate the average shall also be reported. * Notice: This document has been adopted from the original FED-STD-191 Textile Test Method of the same number, and is being maintained as a
14、commercial specification by the Parachute Industry Association. Orders, inquires and comments should be addressed to PIA, Specification Committee via e-mail at: or to our website at: . Copyright 2007-2013 Parachute Industry Association. Disclaimer: This document is published by the PIA to provide t
15、echnical and engineering standards that can be used for reference by all those who may benefit from them. The use of this document is entirely voluntary, and its applicability and suitability for any particular use, including any patent or trademark infringement arising there from, is the sole responsibility of the user. The original Government document was scanned. The PIA reviews each technical publication periodically, at which time it may be reaffirmed, revised, or canceled. The PIA invites your written comments and suggestions. Page 3 of 3 Copyright Protected: Do Not Copy!
