Structural power flow measurement
Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); North Carolina State Univ., Raleigh, NC (United States)
- OSTI ID:
- 476632
- Report Number(s):
- LA-SUB-93-81; ON: DE97003578; TRN: 97:002288-0008
- Resource Relation:
- Other Information: PBD: Dec 1988; Related Information: Is Part Of Precision Engineering Center. 1988 Annual report, Volume VI; Dow, T. [ed.]; Fornaro, R.; Keltie, R.; Paesler, M. [and others]; PB: 367 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
SUPPORT OF GULF OF MEXICO HYDRATE RESEARCH CONSORTIUM: ACTIVITIES TO SUPPORT ESTABLISHMENT OF A SEA FLOOR MONITORING STATION PROJECT
In-Sodium Testing of a Prototype Thermoacoustic Power Sensor for Sodium-Cooled Fast Reactors