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Online since: November 2013
Authors: Aditi Bhusawalkar, S.A. Kedar, Gandhali Deshpande, Kangkana Sarmah, Maithili Yawalkar
Lateral Transfer Device for Hospital Stretcher
Prof.S.A.Kedar1, a, Gandhali Deshpande2, b, Aditi Bhusawalkar3, c, Maithili Yawalkar4, d and Kangkana Sarmah5, e
1 Assistant Professor in Mechanical Engineering, Cummins College of Engineering for Women Pune, INDIA
2,3,4,5 Final Year Engineering B.E.
Musculoskeletal pain is pain that affects the muscles, ligaments and tendons, and bones.The severity of these disorders depends on the weight of the patient handled by them.
It is covered with PVC coated uneven fabric sheet or polyethylene sheet for better sliding properties.
· The risk factor involved in manually transferring a patient with spinal injury is completely eliminated
Musculoskeletal pain is pain that affects the muscles, ligaments and tendons, and bones.The severity of these disorders depends on the weight of the patient handled by them.
It is covered with PVC coated uneven fabric sheet or polyethylene sheet for better sliding properties.
· The risk factor involved in manually transferring a patient with spinal injury is completely eliminated
Online since: January 2021
Authors: Arcady Ayzenshtadt, Tatiana Drozdyuk, Sergey Aksenov
In this regard, one of the key factors is the surface activity of the components associated with the preliminary mechanical activation of the raw material to the optimal values of the specific surface area, which provides the maximum possible transition of internal energy of the entire system to surface energy [6-8].
Scientific publications [11-13] provide contradictory information about the influence of fine waste (for example, pulverized cement powders) on the structurally sensitive properties of cement stone.
It should be noted that this thermodynamic criterion for evaluating the surface properties of raw materials by the amount of surface activity (kS), which takes into account the ability of a highly developed material surface to spontaneous processes of compensation for excess surface energy, is numerically equal to the share of the total reserve of potential energy of the system converted to free surface energy during mechanical activation of raw materials [7].
Goncharov, Crystal energy as a basis for evaluating the magnesian properties of solid materials (including magnesian cements), Saint Petersburg, 2006
Pospelova, Criteria for evaluating energy properties of a surface, Nanosystems: physics, chemistry, mathematics. 2(4) (2011) 1-6
Scientific publications [11-13] provide contradictory information about the influence of fine waste (for example, pulverized cement powders) on the structurally sensitive properties of cement stone.
It should be noted that this thermodynamic criterion for evaluating the surface properties of raw materials by the amount of surface activity (kS), which takes into account the ability of a highly developed material surface to spontaneous processes of compensation for excess surface energy, is numerically equal to the share of the total reserve of potential energy of the system converted to free surface energy during mechanical activation of raw materials [7].
Goncharov, Crystal energy as a basis for evaluating the magnesian properties of solid materials (including magnesian cements), Saint Petersburg, 2006
Pospelova, Criteria for evaluating energy properties of a surface, Nanosystems: physics, chemistry, mathematics. 2(4) (2011) 1-6
Online since: April 2024
Authors: Bhanodaya Kiran Babu Nadikudi
Multi Objective Optimization of Turning Operation Parameters for Aluminium Alloy Using Grey Relational Analysis Method
Bhanodaya Kiran Babu Nadikudi
Mechanical Engineering Department, Sreenidhi Institute of Science and Technology,
Hyderabad, India
uday.nadikudi@gmail.com
Keywords: Aluminium alloy, machining parameters, orthogonal array, surface roughness.
In this contrast, the primary lightweight materials like aluminium and their alloys are placed in first in holding high strength to weight ratio favourable property.
Grey relational coefficients establish the relation between the turning process and their factors [7,8].
Rahul Sharma et al. [18] revealed the effect of CNC turning parameters with AA6262-T6 aluminium alloy material and concluded that the both feed rate and depth of cut are affecting the material removal rate.
Sivaraman et al. [20], Siva surya et al. [21] and Verma and Saranya [22] were realized that the cutting speed is dominating parameter that affects in turning of aluminium alloy materials.
In this contrast, the primary lightweight materials like aluminium and their alloys are placed in first in holding high strength to weight ratio favourable property.
Grey relational coefficients establish the relation between the turning process and their factors [7,8].
Rahul Sharma et al. [18] revealed the effect of CNC turning parameters with AA6262-T6 aluminium alloy material and concluded that the both feed rate and depth of cut are affecting the material removal rate.
Sivaraman et al. [20], Siva surya et al. [21] and Verma and Saranya [22] were realized that the cutting speed is dominating parameter that affects in turning of aluminium alloy materials.
Online since: August 2018
Authors: Xue Bin Zheng, Ya Ran Niu, Jin Liang Sun, Xin Zhong, Tao Zhu, Hong Li
Some investigations have been focused on the mechanical and thermal properties of bulk Yb2SiO5 and Yb2Si2O7.
However, the microstructure and properties of Yb2SiO5 and Yb2Si2O7 coatings are quite different from those of bulk materials.
The aging stress (σa) is a stress due to changes in physical, mechanical and chemical properties of a coating that are induced by thermal exposures.
Zhou, Mechanical and thermal properties of Yb2SiO5: a promising material for T/EBCs applications, J.
Sun, Microstructure and thermal properties of atmospheric plasma sprayed Yb2Si2O7 coating, J.
However, the microstructure and properties of Yb2SiO5 and Yb2Si2O7 coatings are quite different from those of bulk materials.
The aging stress (σa) is a stress due to changes in physical, mechanical and chemical properties of a coating that are induced by thermal exposures.
Zhou, Mechanical and thermal properties of Yb2SiO5: a promising material for T/EBCs applications, J.
Sun, Microstructure and thermal properties of atmospheric plasma sprayed Yb2Si2O7 coating, J.
Online since: December 2012
Authors: Ming Xing Zhang, Qiang Wang
The impingement zone is characterized by large gradients which cause major changes in the local flow properties.
Just above a critical limit, which is dependent on materials properties and process conditions, deposition dominates.
The mechanical and the thermal calibration factors (F1 = 1.2, F2 = 0.3) were generated by correlating calculated critical velocities on the basis of materials properties with experimentally determined critical velocities.
Since particle velocity is the most important factor in determining quality and properties of coatings, modifications of operation parameters should contribute to improve the particle velocity.
Although common features that involves adiabatic shear instability (ASI) at interfaces of particle-particle and particle-substrate, individual case differs based on the thermo-chemical and thermo-mechanical properties of respective particle and substrate.
Just above a critical limit, which is dependent on materials properties and process conditions, deposition dominates.
The mechanical and the thermal calibration factors (F1 = 1.2, F2 = 0.3) were generated by correlating calculated critical velocities on the basis of materials properties with experimentally determined critical velocities.
Since particle velocity is the most important factor in determining quality and properties of coatings, modifications of operation parameters should contribute to improve the particle velocity.
Although common features that involves adiabatic shear instability (ASI) at interfaces of particle-particle and particle-substrate, individual case differs based on the thermo-chemical and thermo-mechanical properties of respective particle and substrate.
Online since: March 2010
Authors: Donato Sorgente, Luigi Tricarico
Post-forming characteristics are mainly affected by thickness variations along
the sheet.
All of these techniques require additional operations (i.e. machining, chemical milling or forming operations such as rotary forming) for the preparation of the blank but they can still be considered convenient for improving the mechanical properties of the product especially in a high-cost and low-volume manufacturing process.
Inverse techniques As seen in previous sections, FE simulations are usually performed to calculate displacements, strains, stresses for given external loads, initial and boundary conditions, geometrical configuration and material properties.
Some other, like material properties and friction coefficients, are difficult to measure (or calculate) but have, like other parameters, a huge role in the quality of numerical results.
The basis of the inverse approach is to consider material properties and/or friction coefficients (or other not well-known parameters) as new unknown parameters and to add experimental results as new input data for the simulation [48].
All of these techniques require additional operations (i.e. machining, chemical milling or forming operations such as rotary forming) for the preparation of the blank but they can still be considered convenient for improving the mechanical properties of the product especially in a high-cost and low-volume manufacturing process.
Inverse techniques As seen in previous sections, FE simulations are usually performed to calculate displacements, strains, stresses for given external loads, initial and boundary conditions, geometrical configuration and material properties.
Some other, like material properties and friction coefficients, are difficult to measure (or calculate) but have, like other parameters, a huge role in the quality of numerical results.
The basis of the inverse approach is to consider material properties and/or friction coefficients (or other not well-known parameters) as new unknown parameters and to add experimental results as new input data for the simulation [48].
Online since: October 2012
Authors: Xiu Fu Wu, Fu Ting Wang
Wall thickness is the main factor that affects paper pulp molding products intensity.
Excessive arc radius is decided by product, paper property and packing special requirements, normally 2~5 mm.
[4] Yang Bin, Chen Haiyan,Analysis on paper pulp molding products structure and mechanical property[J].
Excessive arc radius is decided by product, paper property and packing special requirements, normally 2~5 mm.
[4] Yang Bin, Chen Haiyan,Analysis on paper pulp molding products structure and mechanical property[J].
Online since: April 2021
Authors: Alexander A. Solovyev, Vladislav V. Rybin, Artem V. Kulagin
Dislocations are the most significant of the defects in the crystal structure, which have a significant effect on the mechanical and electrophysical properties of semiconductors (conductivity, luminescence, strength), the kinetics of phase and structural transformations, and diffusion processes [4].
Also the current affects in the picture of the linear defects distribution near the stress concentrator, as illustrated in Fig. 5.
The main factor influencing these processes is revealed.
Also the current affects in the picture of the linear defects distribution near the stress concentrator, as illustrated in Fig. 5.
The main factor influencing these processes is revealed.
Online since: December 2014
Authors: Guo Qun Zhao, Ting Ting Wang, Liang Chen
The charge weld usually has some contamination such as oxides, dust and lubricant, which have detrimental effect on the mechanical properties of profile.
Li [2] investigated the metal flow behavior during extrusion process using finite element modeling simulation, and proposed that the geometric feature at the die corner affects the charge weld length.
And four levels were determined for each factor according to the actual condition, as listed in Table 1.
Li [2] investigated the metal flow behavior during extrusion process using finite element modeling simulation, and proposed that the geometric feature at the die corner affects the charge weld length.
And four levels were determined for each factor according to the actual condition, as listed in Table 1.
Online since: June 2005
Authors: In Seop Lee, Hee Joong Kim, Jong Chul Park, H.H. Kim, Dong Wook Han, Hyun Joo Son, Jeong Koo Kim
Synthetic poly(lactic
acid-co-glycolic acid) (PLGA) is currently being investigated as a biomaterial for the regeneration
of several tissues for its biodegradability, good mechanical properties and proper degradation rate
which is often comparable with the healing time of the damaged human tissues.
The cell affinity of polymeric materials is the most important factor to be concerned when the natural polymers used as biomaterials or scaffolds for cell seeding in tissue engineering, where cell affinity includes two aspects, cell attachment and cell proliferation.
Similar results regarding the cell attachment and proliferation on the synthetic polymers have shown that the polymer surfaces modified with various materials affected cell growth as well as differentiated functions, since the immobilizing materials were hydrophilic and favorable for the interaction with the negatively charged surface of a cell membrane [10-12].
The cell affinity of polymeric materials is the most important factor to be concerned when the natural polymers used as biomaterials or scaffolds for cell seeding in tissue engineering, where cell affinity includes two aspects, cell attachment and cell proliferation.
Similar results regarding the cell attachment and proliferation on the synthetic polymers have shown that the polymer surfaces modified with various materials affected cell growth as well as differentiated functions, since the immobilizing materials were hydrophilic and favorable for the interaction with the negatively charged surface of a cell membrane [10-12].