Results 51 to 60 of about 83,305 (186)

Comparison between dog-bone and Gaussian specimens for size effect evaluation in gigacycle fatigue

Fracture and Structural Integrity, 2013
Gigacycle fatigue properties of materials are strongly affected by the specimen risk volume (volume of material subjected to a stress amplitude larger than the 90% of the maximum stress). Gigacycle fatigue tests, performed with ultrasonic fatigue testing
A. Tridello, D.S. Paolino, G. Chiandussi, M. Rossetto   +3 more
doaj  

Evaluation of Timber Mechanical Properties Through Non-Destructive Testing: A Bibliometric Analysis

Buildings
This study presents a comprehensive bibliometric analysis of research trends in evaluating the mechanical properties of timber structures, with a particular emphasis on the modulus of elasticity (MOE) assessed through non-destructive testing (NDT ...
Marwa Brougui, Krisztián Andor, Péter Szabó   +2 more
doaj   +1 more source

Anti-high speed impact properties of carbon fiber/bismaleimide resin composites

Cailiao gongcheng, 2021
The carbon fiber/bismaleimide resin composites were prepared by the autoclave molding process. Effects of carbon fiber type and volume fraction of carbon fiber on the high speed impact properties were investigated by air cannon impact testing machine ...
GU Shan-qun, ZHANG Dai-jun, FU Shan-long, LIU Yan-feng, LI Jun, ZOU Qi, CHEN Xiang-bao   +6 more
doaj   +1 more source

Prediction of Concrete Strength with P-, S-, R-Wave Velocities by Support Vector Machine (SVM) and Artificial Neural Network (ANN)

Applied Sciences, 2019
Mechanical waves, such as ultrasonic waves, have shown promise for use in non-destructive methods used in the evaluation of concrete properties, such as strength and elasticity.
Jong Yil Park, Young Geun Yoon, Tae Keun Oh   +2 more
doaj   +1 more source

Automated beam builder [PDF]

, 1980
Requirements for the space fabrication of large space structures are considered with emphasis on the design, development, manufacture, and testing of a machine which automatically produces a basic building block aluminum beam.
Muench, W. K.
core   +1 more source

Characterising pressure and bruising in apple fruit [PDF]

, 2007
A large percentage of apples are wasted each year due to damage such as bruising. The apple journey from orchard to supermarket is very complex and apples are subjected to a variety of static and dynamic loads that could result in this damage occurring ...
A. Yoxall, Abbott, Bollen, Bollen, Cliff, Drinkwater, Dwyer-Joyce, Garcia, Herold, Hodgson, Holt, Joyce, Kendall, Krautkrämer, L.A. Canty, Labavitch, Lu, Lu, M.B. Marshall, Marshall, Mohsenin, Moustafa, O’Loughlin, Pang, Pang, Peggie, Preston, R. Lewis, Rabelo, Roudot, Studman, Williams   +31 more
core   +1 more source

Looking at the Unborn: Historical aspects of obstetric ultrasound [PDF]

, 2000
Edited trascript of a Witness Seminar held at the Wellcome Institute for the History of Medicine,in London, on 10 March 1998. First published by the Wellcome Trust, 2000. ©The Trustee of the Wellcome Trust, London, 2000.
Christie, DA, Tansey, EM
core  

The measurement of lubricant-film thickness using ultrasound [PDF]

, 2003
Ultrasound is reflected from a liquid layer between two solid bodies. This reflection depends on the ultrasonic frequency, the acoustic properties of the liquid and solid, and the layer thickness.
Astridge D. G., B. W. Drinkwater, C. J. Donohoe, Hamilton G. M., R. S. Dwyer-Joyce, Tattersall H. G., Tsukahara Y.   +6 more
core   +1 more source

The high frequency flexural ultrasonic transducer for transmitting and receiving ultrasound in air [PDF]

, 2020
Flexural ultrasonic transducers are robust and low cost sensors that are typically used in industry for distance ranging, proximity sensing and flow measurement.
Dixon, Steve M., Feeney, Andrew, Kang, Lei   +2 more
core   +3 more sources

Evaluation Performance of Ultrasonic Testing on Fruit Quality Determination

Journal of Food Quality, 2019
There are several destructive and nondestructive methods for quality evaluation of agricultural products. Most of the employed traditional techniques are time-consuming and involve considerable degree of manual works.
Fikret Yildiz, Ahmet Turan Özdemir, Selman Uluışık   +2 more
doaj   +1 more source