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Online since: September 2011
Authors: Jiu Hua Xu, Yu Can Fu, Ying Fei Ge
Cutting Temperature Investigation when High-speed Milling of SiCp/Al Composites
Y.
The milling speed used was in the low or moderate level and never exceeded 300/min for SiCp/Al composites.
El-Gallab and M.
The milling speed used was in the low or moderate level and never exceeded 300/min for SiCp/Al composites.
El-Gallab and M.
Online since: July 2013
Authors: Ning Wang, Ying Hong Li, Bo Song
The materials used were AZ61 alloys, whose chemical composition is 5.7% Al, 0.9% Zn, Fe, Si<0.01%, balanced Mg.
The Mg-Al-Zn compounds distribute in the magnesium matrix in discontinuous foil-like form and their contents decrease.
Effect of electromagnetic vibrations on microstructure of continuously cast aluminum alloys, Mater Sic Eng, 1993, A173: 169-172 [6] El-Bassyouni T A.
Molidification of Solidification Structures by Pluse Electric Discharging, ISIJ Inter 1990, 30(1): 27-33 [8] Li J M, Li S L, Li J et al, Molidification of Solidification Structure by Pluse Electric Discharging, Scr Metall Mater, 1994, 31(12): 1691-1694 [9] Zi B T,Ba Q X,Cui J Z et al.
Principle of Metallic Solidification, Beijing: Mechanical Industrial Press, 2008, 80-106, 117-151 [12] Bao W P, Xu G M, Ban C Y et al.
The Mg-Al-Zn compounds distribute in the magnesium matrix in discontinuous foil-like form and their contents decrease.
Effect of electromagnetic vibrations on microstructure of continuously cast aluminum alloys, Mater Sic Eng, 1993, A173: 169-172 [6] El-Bassyouni T A.
Molidification of Solidification Structures by Pluse Electric Discharging, ISIJ Inter 1990, 30(1): 27-33 [8] Li J M, Li S L, Li J et al, Molidification of Solidification Structure by Pluse Electric Discharging, Scr Metall Mater, 1994, 31(12): 1691-1694 [9] Zi B T,Ba Q X,Cui J Z et al.
Principle of Metallic Solidification, Beijing: Mechanical Industrial Press, 2008, 80-106, 117-151 [12] Bao W P, Xu G M, Ban C Y et al.
Online since: November 2016
Authors: Dietmar Eifler, Marek Smaga, Frank Balle, Marcus Klein, Tilmann Beck
Klein et al. in these conference proceedings.
To characterize the cyclic deformation of the Al sheets strain gauges (SG) were used above the welded zone.
Fig. 5: Displacement amplitude and change in el. resistance DR in stepwise load-increase tests of AA5754(AP)/CF-PA66-joints [11] The electrical resistance vs.
The load level at point is equivalent to the yield strength of the Al/CFRP-joint[11].
Hence, electrical resistance is a well suited and highly sensitive physical value to describe the actual fatigue state of Al/CFRP-joints.
To characterize the cyclic deformation of the Al sheets strain gauges (SG) were used above the welded zone.
Fig. 5: Displacement amplitude and change in el. resistance DR in stepwise load-increase tests of AA5754(AP)/CF-PA66-joints [11] The electrical resistance vs.
The load level at point is equivalent to the yield strength of the Al/CFRP-joint[11].
Hence, electrical resistance is a well suited and highly sensitive physical value to describe the actual fatigue state of Al/CFRP-joints.
Online since: January 2019
Authors: Giovina Marina La Vecchia, Marialaura Tocci, Lorenzo Montesano, Annalisa Pola, Marcello Gelfi
Steel is known to be easily corroded by liquid aluminum because of the dissolution of Fe in the molten Al and the diffusion of Al towards the steel bulk.
Having a limited solubility in Al and elastic properties only weakly dependent on temperature, it dissolves less in molten Al [6, 20].
One tip was also cut to identify the penetration of the Al in the steel bulk.
Roberti, Semisolid processing of Al-Sn-Cu alloys for bearing applications, Sol.
El-Hadad, Y.
Having a limited solubility in Al and elastic properties only weakly dependent on temperature, it dissolves less in molten Al [6, 20].
One tip was also cut to identify the penetration of the Al in the steel bulk.
Roberti, Semisolid processing of Al-Sn-Cu alloys for bearing applications, Sol.
El-Hadad, Y.
Online since: October 2022
Authors: Pooja J. Yadav
The rare-earth ions like Pr3+, Nd3+ and Gd3+ doped in LiZnO, reported by Tu et al., show attractive long-lasting characteristics as they possess larger values of defect density [23].
The amount of urea required to burn the nitrates was taken from the method described in the paper authored by Patil et.al [28,29].
The TL study of YAG, doped with rare earth is made by You et al. [34], the study claims the TL glow peak at 140° C.
El. 29, 3146 (2017)
The amount of urea required to burn the nitrates was taken from the method described in the paper authored by Patil et.al [28,29].
The TL study of YAG, doped with rare earth is made by You et al. [34], the study claims the TL glow peak at 140° C.
El. 29, 3146 (2017)
Online since: November 2013
Authors: Muhammad Yusuf, N. Ismail, S. Sulaiman, M.K.A. Ariffin
There are difference chip forms for LM6 aluminium alloy and Al-TiC composite for a similar of cutting condition.
Al-TiC composite produced by the in situ technique was used for experimentation.
Cutting force was less in machining (shaping) of Al–TiC composites as compared to those for Al–TiAl3, Al–Si and pure Aluminium [8].
Al-TiC composite was casted using sand moulds with vibration technique [9].
El-Hossainy, Mater. and Manufac.
Al-TiC composite produced by the in situ technique was used for experimentation.
Cutting force was less in machining (shaping) of Al–TiC composites as compared to those for Al–TiAl3, Al–Si and pure Aluminium [8].
Al-TiC composite was casted using sand moulds with vibration technique [9].
El-Hossainy, Mater. and Manufac.
Online since: August 2022
Authors: Yasir Nawab, Naveed Ahmed Siddiqui, Arif Ali Shah, Muhammad Shahid
Sloan et.al. [18] studied the auxetic effect at the yarn stage.
Wright et al carried out a finite element analysis and an experimental study and investigated the influence of structural and material parameters on the auxetic performance of the DHY [19].
Bhattacharya et al. investigated core-indentation effects on the auxetic behaviour of the DHY [20].
Sloan et al. [18] suggested the use of Polyurethane as core fibre and Polyamide as wrap fibre to produce DHY.
εR = (DL/ DI – 1) x 100 % (1) Poisson’s ratio for yarns was calculated using engineering strains ɛR and ɛL according to Eq. 2 ʋ= - ɛR / ɛL (2) Results and Discussion Fig. 2 shows load vs extension plots for the individual fibre/yarn components.
Wright et al carried out a finite element analysis and an experimental study and investigated the influence of structural and material parameters on the auxetic performance of the DHY [19].
Bhattacharya et al. investigated core-indentation effects on the auxetic behaviour of the DHY [20].
Sloan et al. [18] suggested the use of Polyurethane as core fibre and Polyamide as wrap fibre to produce DHY.
εR = (DL/ DI – 1) x 100 % (1) Poisson’s ratio for yarns was calculated using engineering strains ɛR and ɛL according to Eq. 2 ʋ= - ɛR / ɛL (2) Results and Discussion Fig. 2 shows load vs extension plots for the individual fibre/yarn components.
Online since: December 2010
Authors: Wilhelm Weber, Karsten Kolk, Kai Willner, Günther Kuhn
First solutions of the contact problem with the BEM trace back to Andersson et al. [13].
In case of contact - stick or slip - the total tangential relative displacements are composed by a reversible elastic part ˆuc,el ti and the slip ˆuc,sl ti : ˆucti = ˆuc,el ti + ˆuc,sl ti . (24) Between the reversible displacements and tangential tractions also a linear constitutive law with the constant tangential contact stiffness ǫt is assumed: tti(ˆucti) = −ǫt ˆuc,el ti . (25) This softening of the hard contact conditions can be physically interpreted as a deformation of the surface roughness [23].
Therefore, the kink angle ϕ(P) is calculated by the maximum tangential stress (MTS) criterion of Erdogan et al. [32].
Following the investigation of Tanaka et al. [33] the values of KI(P) and KII(P) are replaced by their ranges ∆KI(P) and ∆KII(P) within the MTS-criterion (43).
An extension considering the static pre-stressing of the structure is given by the formula of Hourlier et al. [35] da(P) dN = C [∆Keq(P)] m � Kmax eq (P) �n (45) with the additional material parameter n.
In case of contact - stick or slip - the total tangential relative displacements are composed by a reversible elastic part ˆuc,el ti and the slip ˆuc,sl ti : ˆucti = ˆuc,el ti + ˆuc,sl ti . (24) Between the reversible displacements and tangential tractions also a linear constitutive law with the constant tangential contact stiffness ǫt is assumed: tti(ˆucti) = −ǫt ˆuc,el ti . (25) This softening of the hard contact conditions can be physically interpreted as a deformation of the surface roughness [23].
Therefore, the kink angle ϕ(P) is calculated by the maximum tangential stress (MTS) criterion of Erdogan et al. [32].
Following the investigation of Tanaka et al. [33] the values of KI(P) and KII(P) are replaced by their ranges ∆KI(P) and ∆KII(P) within the MTS-criterion (43).
An extension considering the static pre-stressing of the structure is given by the formula of Hourlier et al. [35] da(P) dN = C [∆Keq(P)] m � Kmax eq (P) �n (45) with the additional material parameter n.
Online since: August 2011
Authors: Yeong Sant Kuo
The Al-5Ti-1B master alloy was added for grain refinement.
Thesis, NCKU, Tainan, Taiwan, ROC (1990) [2] E.L.
Panchanathan, “End Chills Influence on Solidification Soundness of Al-Cu-Si (LM4) alloy Castings,” AFS Transactions, vol.81, (1973) pp.110-114, [10] Y.W.
Chieu, “Modeling of feeding Behavior of Solidifying Al-7Si-0.3Mg Alloy Plate Casting,” Metall.
Berry, “Effects of solidification Conditions on Mechanical Behavior of Al Cast Alloys,” AFS Trans.
Thesis, NCKU, Tainan, Taiwan, ROC (1990) [2] E.L.
Panchanathan, “End Chills Influence on Solidification Soundness of Al-Cu-Si (LM4) alloy Castings,” AFS Transactions, vol.81, (1973) pp.110-114, [10] Y.W.
Chieu, “Modeling of feeding Behavior of Solidifying Al-7Si-0.3Mg Alloy Plate Casting,” Metall.
Berry, “Effects of solidification Conditions on Mechanical Behavior of Al Cast Alloys,” AFS Trans.
Online since: April 2013
Authors: R. Rezzoug, H. Djelouah, L. Louni
Louni 3, c
Laboratoire de Physique des Matériaux, Faculté de Physique, USTHB, BP 32 El Alia Bab-Ezzouar(Algerie)
e-mail :Rachidrez@gmail.com
Keywords: Hollow, RST, MRST, acoustic scattering, resonance, matrix S, absolute phase.
Also the resonance of the fluid cavity is mixed with contributions waves diffracted by the wall of the cavity. [9] Difficulty to separating these two phenomena led us to consider the formalism of MRST was already used in quantum chemistry and physics. [10] Haug and al. [11] were the first to apply the MRST acoustics, they revealed that the energy of the fluid column is divided into two channels, one channel and one longitudinal wave which is transversal superimposed on the bottom echo on the non-resonant soft roll.
Matrix S or scattering matrix comes from quantum mechanics [25], it is introduced in acoustic by Flax et al [1] for the study of resonances.
Resonances MRST: Results and Discussion In the theory of the RST [1, 2, 3], the isolation of resonances takes place by removing the non-resonant contribution (specular) of broadcast spectrum in the case of the fluid cavity, Solomon et al.
The MIIR (method of isolation and identification of resonances) is an experimental technique developed by Maze et al. [15] to check the results of the RST for different materials.
Also the resonance of the fluid cavity is mixed with contributions waves diffracted by the wall of the cavity. [9] Difficulty to separating these two phenomena led us to consider the formalism of MRST was already used in quantum chemistry and physics. [10] Haug and al. [11] were the first to apply the MRST acoustics, they revealed that the energy of the fluid column is divided into two channels, one channel and one longitudinal wave which is transversal superimposed on the bottom echo on the non-resonant soft roll.
Matrix S or scattering matrix comes from quantum mechanics [25], it is introduced in acoustic by Flax et al [1] for the study of resonances.
Resonances MRST: Results and Discussion In the theory of the RST [1, 2, 3], the isolation of resonances takes place by removing the non-resonant contribution (specular) of broadcast spectrum in the case of the fluid cavity, Solomon et al.
The MIIR (method of isolation and identification of resonances) is an experimental technique developed by Maze et al. [15] to check the results of the RST for different materials.