Advanced Nondestructive Evaluation (Ultrasonic Pulser/Receiver Technology).

reportActive / Technical Report | Accession Number: ADA117841 | Open PDF

Abstract:

The overall goal of this program was to develop a digital ultrasonic correlation system for NDE application of greater versatility and capability than the successful analog system developed in-house at AFWALMLLP. SRL had only limited success in meeting this overall goal. The program broke into two complementary tasks 1 development of an all-digital PulserReceiver with a bandwidth of 85 MHz and a maximum gain of 80 dB and 2 development of a pseudo-random correlation unit. The PulserReceiver met all of its necessary requirements however, the correlation unit suffered from a technical design decision made early in the program as to the number of bits used in the correlation process. The decision based upon both cost and the results of the computer model of an 8-bit correlation system was to utilize 1-bit correlation. This choice led to an unavoidable and most undesirable nonlinearity in the correlated signal output when the input signalnoise ratio approached unity. This unfortunate consequences has restricted the versatility and capability of the entire system.

Author(s):
Shaufl, Robert A.
Author Organization(s):
SYSTEMS RESEARCH LABS INC DAYTON OH NDE SYSTEMS DIV
Descriptive Note:
Final rept. 29 May 79-1 Feb 81,
Pagination:
0182

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFWAL-TR-81-4038
Contract/Grant Number(s):
F33615-79-C-5020
Task Number(s):
05
Project Number(s):
2418
Monitor Series:
TR-81-4038
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.1.3_Switching and Routing; JCA_6_Net Centric; JCA_6.1.1_Wired Transmission; JCA_6.1_Information Transport; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_5.3.3_Develop Strategy; JCA_2_Battlespace Awareness; JCA_2.3_Processing and Exploitation; JCA_6.4.1_Secure Information Exchange; JCA_5.6_Monitor; JCA_6.4_Information Assurance; JCA_5.6.3_Assess Achievement of Objectives; JCA_5.6.1_Assess Compliance with Guidance; JCA_5.4_Decide; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_1_Force Support; JCA_4.3_Maintain
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*Ultrasonic tests, *Pulses, *Receivers, *Nondestructive testing, Pseudo noise systems, Test and evaluation, Test equipment, Correlation techniques, Digital systems, Analog systems, Bandwidth, Gain, Requirements, Specifications, Pseudo random systems
Field(s)/Group(s):
Test Facilities, Equipment and Methods
Keyword(s):
Advanced systems, Ultrasonic pulser receivers, Pseudorandom noise, Digital purser receivers WUAFWAL24180510
Report Date:
1982 May 01