Results 71 to 80 of about 28,309 (205)

Evaluation of laser range-finder mapping for agricultural spraying vehicles [PDF]

, 2013
In this paper, we present a new application of laser range-finder sensing to agricultural spraying vehicles. The current generation of spraying vehicles use automatic controllers to maintain the height of the sprayer booms above the crop. However, these
A Nüchter, AM Endalew, F Rovira-Más, F-A Moreno, H Jeon, J Anthonis, J Wei, M Magnusson, P Walklate, S Pedersen, S Thrun   +10 more
core   +1 more source

Experimental characterization of wheel-rail contact patch evolution [PDF]

, 2006
The contact area and pressure distribution in a wheel/rail contact is essential information required in any fatigue or wear calculations to determine design life, re-grinding, and maintenance schedules. As wheel or rail wear or surface damage takes place
Björklund, S., Dwyer-Joyce, R.S., Lewis, R., Marshall, M.B., Olofsson, U.   +4 more
core   +1 more source

SIMLATION OF 3D RESIDUAL STRESS FIELD OF ULTRASONIC SURFACE ROLLING BY DYNAMIC FINITE ELEMENT ANALYSIS

Jixie qiangdu, 2017
The present paper presents a numerical approach to investigate the surface layer residual stress after ultrasonic surface rolling process（USRP）,which is a severe plastic deformation process involving complex static extrusion and dynamic impact.According ...
ZHAO YunCai, WEN ChunBin
doaj  

Deepening the cognition of ultrasonic vibration's role on plastic deformation of 2219 aluminum alloy tube during ultrasonic surface rolling process

Manufacturing Review
This work aims to enhance the comprehension of the effect of ultrasonic vibration on the plastic deformation of 2219 aluminum alloy during ultrasonic surface rolling process (USRP).
Zhang YuanQi, Zhan Mei, Fan XiaoGuang
doaj   +1 more source

Measuring Dislocation Density in Aluminum with Resonant Ultrasound Spectroscopy

, 2008
Dislocations in a material will, when present in enough numbers, change the speed of propagation of elastic waves. Consequently, two material samples, differing only in dislocation density, will have different elastic constants, a quantity that can be ...
ALEJANDRO JARA, ANDRES CARU, FELIPE BARRA, FERNANDO LUND, Granato A. V., Koehler J. S., MARIA TERESA CERDA, Migliori A., NICOLAS MUJICA, RODRIGO ESPINOZA, Stix T. H., Williams D. B.   +11 more
core   +1 more source

Study on the effect of surface composite strengthening on the surface integrity of 18CrNiMo7-6 carburized gear steel

Jixie qiangdu
Shot peening process is widely used in the manufacturing process of gears and other basic components, and its own limitations limit the enhancement of the surface integrity of the workpiece.
WANG Zhen, SUN Hao, CUI Yilong, LI Linyan, WANG Tao, HAN Jiaobao   +5 more
doaj   +2 more sources

Improving the Wear Resistance of Profiled Parts of Binding Equipment by Forming a Microrelief Using the Ultrasonic Burnishing Method

Технологія і техніка друкарства
The object of this research is the process of improving the wear resistance of profiled components of bookbinding equipment by forming a strengthening microrelief using ultrasonic rolling.
Василь Борисович Струтинський
doaj   +1 more source

Study of the general mechanism of stress corrosion of aluminum alloys and development of techniques for its detection Quarterly report, 1 Dec. 1967 - 29 Feb. 1968 [PDF]

Stress corrosion of aluminum alloys and techniques for its ...
Bell, R. O., Brummer, S. B., Cocks, F. H., Cordellos, A., Krebs, M., Russo, J.   +5 more
core   +2 more sources

Index to NASA Tech Briefs, January - June 1967 [PDF]

, 1967
Technological innovations for January-June 1967, abstracts and subject ...

core   +1 more source

Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5

Teshugang, 2010
With decreasing rolling speed, increasing reduction in rough rolling passes especially in last passes, the quality of macrostructure of continuous rolling Φ30 ~45 mm round products of bearing steel GCr15 rolled from 150 mm x 150 mm casting billet ...
付俊薇, 赵杰, 刘建培, 周建英
doaj