USF

(redirected from Ultrasonic Fatigue)
AcronymDefinition
USFUniversity of South Florida
USFUniversal Service Fund (often part of phone bill in US)
USFUniversity of San Francisco
USFUniversity of Sioux Falls
USFUniversity of Saint Francis (Fort Wayne, IN)
USFUniversity of St. Francis (Joliet, IL)
USFUniversal Studios Florida (theme park)
USFUS Foodservice (various locations)
USFUniversal Subtitle Format
USFUS Fleet (US Navy)
USFUpstream Stimulatory Factor
USFUniversal Service Fee
USFUnited States Flag
USFUtah Shakespearean Festival
USFUnd So Fort (German: And So Forth)
USFUsable Square Feet (real estate)
USFUnit Set Fielding (US Army methed for distribution of equipment to units)
USFUnion Suisse des Fiduciaires (French: Swiss Fiduciary Association)
USFUnion Station Foundation (California)
USFUnified Sportsmen of Florida
USFUplink State Flag
USFUngdommens Sjakkforbund (Norwegian Youth Chess Federation)
USFUnited Space Federation (Star Trek gaming)
USFUniversal Server Farm
USFUnterhaltungs Software Forum
USFUnion Sportive Fontenaysienne (French sports organization)
USFUltrasonic Fatigue
USFUnited Scleroderma Foundation
USFUnilever Superannuation Fund (mutual fund)
USFUnited States Freightways
USFUnion Sportive Ferrièroise (French: Ferrièroise Sports Union; La Ferrière, France)
USFUndefined State Fault
References in periodicals archive ?
In this study, in order to investigate the effect of humidity on the ultrasonic fatigue properties, ultrasonic fatigue tests were carried out in different conditions: dry air, saturated humidity and submerged in distilled water.
Ultrasonic fatigue testing was conducted using an ultrasonic fatigue testing machine manufactured by the University of BOKU, Vienna, Austria [17], as shown in Figure 3(a).
Ultrasonic fatigue testing was carried out in various environments with different RH (relative humidity) levels: dry air (RH<1%), saturated humidity (RH>99%) and submerged in distilled water.
In ultrasonic fatigue testing, tests performed in dry air resulted in the highest fatigue life and tests in distilled water resulted in the lowest fatigue life.
Obviously, ultrasonic fatigue testing in dry air has lowest water exposure and highest facets percentage.
For this aluminum alloy, the fatigue properties are different for tests conducted under ultrasonic fatigue (20 kHz) and conventional fatigue (30 Hz).
The percentage of facets observed on the fracture surfaces in ultrasonic fatigue testing correlate well with water exposure parameter (P/f); a high percentage of facets corresponding to low water exposure value.