Now showing items 1-10 of 717
Sparse arrays and image compounding techniques for non-destructive testing using guided acoustic waves
Piezoelectric array transducers applications are becoming usual in the ultrasonic non-destructive testing area. However, the number of elements can increase the system complexity, due to the necessity of multichannel ...
Stress evaluation of railroad forged wheels by ultrasonic testing
(Amer Soc Testing MaterialsW ConshohockenEUA, 2007)
Influence of ultrasonic setting on compressive and diametral tensile strengths of glass ionomer cements
(ABM, ABC, ABPol, 2008)
The aim of this study was to assess the influence of ultrasonic wave propagation on the compressive (CS) and diametral tensile (DTS) strengths of glass ionomer cements (GICs). Three variables were evaluated: conventional ...
Evaluation of the density distribution in MDF's using ultrasonic wave technique
(Ipef-inst Pesquisas Estudos FlorestaisPiracicabaBrasil, 2007)
Effect of the Etching Duration and Ultrasonic Cleaning on Microtensile Bond Strength Between Feldspathic Ceramic and Resin Cement
(Taylor & Francis Ltd, 2013-03-01)
This study assessed the effect of different etching durations of feldspathic ceramic with hydrofluoric acid (HF) and ultrasonic cleaning of the etched ceramic surface on the microtensile bond strength stability of resin ...
Thermal characterization of an ultrasonic density-measurement cell
(Institute of Electrical and Electronics Engineers (IEEE), 2007-06-01)
An ultrasonic density-measurement cell is experimentally characterized as a function of temperature. The measurement of propagation velocity and density of several liquids is performed in the 15 degrees C-40 degrees C ...
pH changes after manual or ultrasonic instrumentation and smear layer removal with EDTA or ultrasonic
The purpose of the present study was to evaluate the influence of instrumentation techniques associated with the smear layer removal, in the pH changes of the root surface. Thirty mandibular humans premolars were divided ...
Comparison of different ultrasonic tip angulations on time required for cast post removal
Aim: The aim of this study was to design, develop and compare ultrasound tips with different angulations on time required for cast post removal. Materials and methods: To test and compare the ultrasonic tips developed, 36 ...