Results 41 to 50 of about 2,953,458 (303)

A wear diagnosis for brake pads by evaluation of contact interface

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
This work examined a used brake pad and another brand new one to compare their contact shape and contact area. Surface roughness measurement and ultrasonic scanning were used to study the contact interface.
Chuang-Wen YAO, Yu-Wen CHEN
doaj   +1 more source

Eyelid Pressure and Contact with the Ocular Surface [PDF]

open access: yesInvestigative Opthalmology & Visual Science, 2010
Purpose. To investigate static upper eyelid pressure and contact with the ocular surface in a group of young adult subjects. Methods. Static upper eyelid pressure was measured for 11 subjects using a piezoresistive pressure sensor attached to a rigid contact lens.
Shaw, Alyra   +3 more
openaire   +3 more sources

Numerical Modelling of Contact Interactionof Profiled Metal Gaskets in Aircraft Flange Connections

open access: yesRUDN Journal of Engineering Research
The relevance of the research is justified by the development of flange connections of hermetic structures of aeronautical equipment under conditions of weight and material intensity limitation with simultaneous increase of their technical and energetic ...
Lyubov’ I. Mironova   +2 more
doaj   +1 more source

Effect of Tapered Interference Fit between Impeller and Shaft in Turbo Machines

open access: yesJournal of Mechanical Engineering, 2018
In Turbo machines, there are many components which are provided with interference to transmit torque and to maintain contact between them. There are transient scenarios where impeller and shaft lose interference and limits the speed of the impeller.
Vishwakarma Nilesh   +2 more
doaj   +1 more source

Preventive measures of fretting wear in contact surfaces of inner ring and backing ring of railway axle journal bearings (Combined effect of grooving and segment‐structured DLC coating towards backing rings)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Fretting wear is surface damage caused by repeated slight relative slips between two contact surfaces. In railway applications, fretting wear may occur between the inner ring and the backing ring of an axle journal tapered roller bearing.
Yoshiaki OKAMURA   +3 more
doaj   +1 more source

FFT-Based Methods for Computational Contact Mechanics

open access: yesFrontiers in Mechanical Engineering, 2020
Computational contact mechanics seeks for numerical solutions to contact area, pressure, deformation, and stresses, as well as flash temperature, in response to the interaction of two bodies.
Q. Jane Wang   +5 more
doaj   +1 more source

Contact pressures in the human hip joint [PDF]

open access: yesThe Journal of Bone and Joint Surgery. British volume, 1987
The pressure distribution between the cartilaginous surfaces in the human hip joint was measured using pressure-sensitive film. Five cadaveric hip joints (aged between 58 and 87 years) were measured at three positions and loads, representing three instants in the stance phase of the walking cycle.
N Y, Afoke, P D, Byers, W C, Hutton
openaire   +2 more sources

Contact material for pressure-sintering ferrites [PDF]

open access: yes, 1970
Pressure-sintering, in which the unfired laminated ferrite plane is placed between two flat punches and pressed during firing, reduces lateral firing shrinkage to less than one percent. A decrease in thickness of the laminate produces the required volume
Wentworth, C.
core   +1 more source

Estimation of the normal contact stiffness for frictional interface in sticking and sliding conditions [PDF]

open access: yes, 2019
Modeling of frictional contact systems with high accuracy needs the knowledge of several contact parameters, which are mainly related to the local phenomena at the contact interfaces and affect the complex dynamics of mechanical systems in a prominent ...
Baillet, L.   +4 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

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