Fiber Optic Strain Sensors (FOSS) to Monitor Strains on a Navy Vessel During Operations

reportActive / Technical Report | Accession Number: ADA475137 | Open PDF

Abstract:

This document summarizes the recent deployment of a fiber optic strain sensing FOSS system to monitor loads on a Navy Vessel, as requested and authorized by Commander Naval Surface Force, Atlantic. The objectives were to 1 conduct an in-service validation of the technology onboard a U.S. Navy ship and 2 determine contributing influences to recurring cracking of new deckplate, as described by the Southeast Regional Maintenance Center SERMC Port Engineer. Previous NAVSEA investigations discuss sensitization of the aluminum and onset of stress corrosion cracking SCC, although the source of the SCC stresses have never been characterized. This effort attempts to quantify performance of the FOSS technology as a tool to provide such characterization. Covered in this document are the instrumentation, data collection and subsequent analysis.

Author(s):
Nichols, Jonathan M. ; Seaver, Mark ; Trickey, Stephen T. ; Scandell, Kenneth C. ; Salvino, Liming
Author Organization(s):
NAVAL RESEARCH LAB WASHINGTON DC OPTICAL TECHNIQUES BRANCH
Descriptive Note:
Memorandum rept. 1 Jan-15 Aug 2007
Supplementary Note:
Prepared in collaboration with the Naval Surface Warfare Center West Bethesda, MD. The original document contains color images.
Pagination:
0012

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):
NRL/MR/5673--07-9091
Contract/Grant Number(s):
N00014-07-WX21397
Monitor Series:
NRL/MR/5670
 Subject Terms
Joint Capability Areas:
JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_6.1.1_Wired Transmission; JCA_4_Logistics; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_5_Command and Control; JCA_6.4.1_Secure Information Exchange; JCA_4.1_Deployment and Distribution; JCA_5.3_Planning; JCA_6.4_Information Assurance; JCA_4.3_Maintain; JCA_5.2_Understand; JCA_8_Building Partnerships
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*MONITORING, *CRACKING(FRACTURING), *SHIP DECKS, FIBER OPTICS, STRAIN(MECHANICS), MANEUVERS, DATA ACQUISITION, TEMPERATURE, ALUMINUM ALLOYS
Field(s)/Group(s):
Marine Engineering, Structural Engineering and Building Technology, Mechanics
Keyword(s):
FOSS(FIBER OPTIC STRAIN SENSING), DECKPLATE CRACKING, FIBER BRAGG GRATINGS, STRAIN MONITORING, SCC(STRESS CORROSION CRACKING), STRAIN ROSETTES, STRAIN ANGLES, ENGINE LOADS, DECKPLATE COMPRESSIVE STRESS, WU56929507
Report Date:
2007 Nov 23
Creation Date:
2008 Jan 16