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ULTRASONIC MEASUREMENT AND CONTROL OF SURFACE ROUGHNESS

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
7518
Program Year/Program:
1988 / SBIR
Agency Tracking Number:
7518
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Industrial Quality
640 E. Diamond Avenue Suite C Gaithersburg, MD 20877 0532
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1988
Title: ULTRASONIC MEASUREMENT AND CONTROL OF SURFACE ROUGHNESS
Agency: NSF
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

THE AMPLITUDE OF ULTRASOUND REFLECTED OR SCATTERED FROM A SOLID SURFACE IN A FLUID DEPENDS ON THE RELATIVE ACOUSTIC IMPEDANCES OF THE MEDIA AND ALSO ON THE SURFACE ROUGHNESS OFTHE SOLID. A VERY SMOOTH SURFACE WILL TEND TO REFLECT A HIGHER ULTRASONIC AMPLITUDE THAN A ROUGH ONE. A ROUGH SURFACE WILL LEAD TO SIGNIFICANT SCATTER INTENSITY, MEASUREMENTS OF ULTRASONIC REFLECTIVITY AND SCATTER, THEREFORE, MAY BE USED TO DETERMINE SURFACE ROUGHNESS AND TO MONITOR ROUGHNESS WHILE A MATERIAL IS BEING MACHINED. THUS, ULTRASONIC MEASUREMENTS OFFER PROMISE FOR DYNAMIC (IN-PROCESS, REAL-TIME) MONITORING OF MACHINING PROCESSES TODETECT VARIATIONS IN SURFACE ROUGHNESS AND TO RELATE THE MEASUREMENTS TO WEAR OR BREAKAGE OF THE CUTTING TOOL. IN THIS PROGRAM WE PROPOSE TO MEASURE ULTRASONIC REFLECTION ANDSCATTER FROM METAL SURFACES WITH THREE DIFFERENT ROUGHNESS VALUES. THE MEASUREMENTS WILL BE DONE OVER A RANGE OF ULTRASONIC FREQUENCIES AND SCATTER ANGLES. THESE RESULTS WILL LEAD TO IMPROVED UNDERSTANDING AND A MODEL THAT WILL PROVIDE INSIGHT FOR THE DEVELOPMENT OF AN ULTRASONIC INSTRUMENT FOR DYNAMIC SURFACE ROUGHNESS MEASUREMENT AND FOR THE CONTROL OF MACHINING PROCESSES.

Principal Investigator:

Thomas s jones
0

Business Contact:

Small Business Information at Submission:

Industrial Quality Inc
15215 Shady Grove Road Suite 203 Rockville, MD 20850

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No