An introduction to tribology in industry

Halling, J.

doi:10.1016/0041-2678(70)90303-9

Cited by 24 publications

(36 citation statements)

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“…The obvious examples are the contact of the thrust roller bearing and deep groove ball bearing where the running-in occurs on the rings. Its initial In the case of rolling friction where the friction takes place on the rolling contact motion and produce the resistance to motion, Halling (1976) classified the rolling contact into: (a) Free rolling, (b) Rolling subjected to traction, (c) Rolling in conforming grooves and (d) Rolling around curves. Whenever rolling occurs, free rolling friction must occur, whereas (b), (c) and (d) occur separately or in combination, depending on the particular situation.…”

Section: Introductionmentioning

confidence: 99%

Topographical Change of Engineering Surface due to Running-in of Rolling Contacts

Ismail¹,

Tauviqirrahman²,

Jamari³

et al. 2011

New Tribological Ways

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Section: Introductionmentioning

confidence: 99%

Topographical Change of Engineering Surface due to Running-in of Rolling Contacts

Ismail¹,

Tauviqirrahman²,

Jamari³

et al. 2011

New Tribological Ways

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“…where ; are width and height of surface domain in pixels; ℎ (1) ; ℎ (2) are height of first (second) surface in the pixel ( ; ); ℎ (1) ; ℎ (2) are the average height of the first (second) surface; and…”

Section: The Firstmentioning

confidence: 99%

“…Mechanical engineers can use contacting electronic profilometers to determine digital two-dimensional (2D) profiles that can be combined into 3D surface profiles; see [1,2], for example. The contacting mode of atomic force microscopes actually belongs to this mechanical category [3].…”

Section: Introductionmentioning

confidence: 99%

3D Reconstruction of the Surface Using a Standard Camera

Martišek

2017

Mathematical Problems in Engineering

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This paper deals with 3D reconstructions of series of partially focussed images. Some of these methods are known in case of images which were acquired in small field of view (by confocal microscope or CCD camera, e.g.). In this case, recorded images do not differ in any geometrical transformation from each other. In case of larger samples (oversized for microscope or CCD camera), it is necessary to use wider viewing field (standard cameras, e.g.), and taken images primarily differ in scaling but may also differ in shifting and rotation too. These images cannot be used for reconstruction directly; they must be registered; that is, we must determine all transformations which the images differ and eliminate their effects. There are several ways to do this. This paper deals with the registration based on phase correlation. After this registration, it is necessary to identify the sharp parts and to compose a 2D and 3D model. Present methods are very sensitive to noise and their results are not satisfactory in many cases. We introduce a new method for 3D reconstruction which is significantly better.

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“…This adhesion will be at a high grade of efficiency and capability in relative to the clean surfaces, and adhesion will take place between a number of these projections whose sizes will be bigger and the area will be increased during movement (Eyre 1976, Halling 1976. At the end there will be some relative wear in the superficial tissues in the weak points of the noticeable places as shown in Fig.(1) bellows : Fig.1 The mechanism illustration of adhesion wear (Buckley,1981) This adhesion wear is proportional directly to the load applied and the sliding distance and indirectly with the hardness of the metal.…”

Section: Introductionmentioning

confidence: 99%

Effect of loads, sliding speeds and times on the wear rate for different materials

Ameen¹

2011

AJSIR

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A study has been made on the wear rate for different materials (Steel, Aluminum and brass) under the effect of sliding speed, time and different loads, where the apparatus pin on disc has been used to study the specification of the adhesion wear. The experiments has been performed on a group of specimens under different cases of times (5 to 30) minutes, and under different loads (0.5 to 2) Kg, and different speeds (2.5 to 9) m/sec. A mathematical model has been made for all cases that were studied depending on the method of least squares which helps in foretelling about the wear rate through the knowledge of time limits as a variable with fixing the other variables; also building a model with the same method by which foretelling the rate of adhesive wear through knowing the sliding speed as a variable after fixing the other variables, also making another model foretelling the rate of adhesive wear through knowing the variable loads. A study was made for the damaged surface from wearing for the aluminum alloy as a sample to illustrate the wear lines to the direction of the formation of wear; and from the results, it was clear that the cracks which are vertical on the direction of sliding and will meet together with the lines of weariness, and the results will show that the rate of adhesion wear will be direct proportional with (time, sliding speed and load) , and the low carbon steel has less wear rate than the other materials.

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An introduction to tribology in industry

Cited by 24 publications

References 0 publications

Topographical Change of Engineering Surface due to Running-in of Rolling Contacts

Topographical Change of Engineering Surface due to Running-in of Rolling Contacts

3D Reconstruction of the Surface Using a Standard Camera

Effect of loads, sliding speeds and times on the wear rate for different materials

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