A Cursory Examination of a Parachute Bag Knife, P/N 71172

reportActive / Technical Report | Accession Number: ADA455925 | Open PDF

Abstract:

A parachute bag knife was received for a quick-look analysis to determine the reason for edge deformation after normal use. The U.S. Army Research Laboratory performed hardness testing, chemical analysis, and metallography. Hardness testing in conjunction with metallography showed a layer of decarburization around the periphery of the knife not on the blade edge, however. Chemical analysis verified alloy AISI 4130 was used. Metallography also revealed a less than optimal microstructure for this alloy. It was recommended that future parts be quenched and tempered to produce a tougher knife edge.

Author(s):
Pepi, Marc ; Champagne, Victor
Author Organization(s):
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
Descriptive Note:
Final rept. Mar 2006
Supplementary Note:
The original document contains color images.
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARL-TR-3892
Project Number(s):
680L31
Monitor Series:
NRDEC
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6_Engineering; JCA_8_Building Partnerships
Modernization Areas:
Microelectronics
Communities of Interest:
Weapons Technologies
Descriptor(s):
*BLADES, *KNIVES, *CHEMICAL ANALYSIS, TEST AND EVALUATION, MICROSTRUCTURE, METALLOGRAPHY, MICROHARDNESS, QUENCHING, HEAT TREATMENT, EDGES, DEFORMATION
Field(s)/Group(s):
Metallurgy and Metallography, Logistics, Military Facilities and Supplies, Gliders and Parachutes
Keyword(s):
*PARACHUTE BAG KNIVES, DECARBURIZATION
Report Date:
2006 Sep 01
Creation Date:
2006 Nov 01