Acoustic Emission Signals from Gypsum-bonded Dental Casting Molds during Thermal Processing
スポンサーリンク
概要
- 論文の詳細を見る
To develop a suitable heating program for the investments which affect the casting accuracy/defects of prostheses, a probable microstructural change of the gypsum-bonded investments related to the transition of refractory particles during thermal processing was inspected by the measurement of acoustic emission (AE) signals. Cypsum-bonded cristobalite and quartz investment molds were used. AE measurements were carried out for the specimens in an electric furnace that was heated/cooled at a constant rate. For the heating process of the cristobalite investment, high AE activities were detected in the temperature range where the cristobalite was transformed. However, the AE signals detected were low for the second run of the heating and cooling processes. Even in the heating process, significant AE signals were not detected for the quartz investment. For cristobalite investment molds, micro-cracks are initiated and developed in relation to the transition of cristobalite particles in the mold. This leads to deterioration of the mechanical properties of the cristobalite investment at high temperatures (melt-pouring), and may affect the fitness of cast prostheses.
- 日本歯科理工学会の論文
著者
-
ASAOKA Kenzo
Department of Biomaterials and Bioengineering, The University of Tokushima Graduate School of Oral S
-
YOSHIDA Kenichi
Department of Life Sciences, School of Agriculture, Meiji University
-
Kim Kyo-han.
Department Of Dental Meterials College Of Dentistry Kyungpook National University
-
Asaoka Kenzo
Department Of Dental Engineering School Of Dentistry The University Of Tokushima
-
Asaoka Kenzo
Department Of Biomaterials And Bioengineering Institute Of Health Biosciences The University Of Toku
-
Yoshida K
Graduate School Of Business Science University Of Tsukuba
-
Yoshida Kenichi
Department Of Legal Medicine Graduate School Of Medicine University Of Tokyo
-
Yoshida Kenichi
Department Of Forensic Medicine Graduate School Of Medicine University Of Tokyo
-
Asaoka Kenzo
Department Of Biomaterials & Bioengineering Institute Of Health Biosciences The University Of Tokushima Graduate School
-
ASAOKA Kenzo
Department of Dental Engineering, School of Dentistry, The University of Tokushima
関連論文
- Antibacterial activity of composite resin with glass-ionomer filler particles
- The Small Heat Shock Protein αB-Crystallin Inhibits Differentiation-Induced Caspase 3 Activation and Myogenic Differentiation(Molecular and Cell Biology)
- Enamel bonding of self-etching and phosphoric acid-etching orthodontic adhesives in simulated clinical conditions : Debonding force and enamel surface
- Ischemic preconditioning upregulates VEGF mRNA expression and neovascularization via nuclear translocation of PKC-ε in the rat ischemic myocardium
- An Automated Measuring System for Fundus Perimetry
- Development of Calcium Phosphate Cement for Rapid Crystallization to Apatite
- Mechanical Properties of Porcelain Containing Leucite Ion-exchanged with Rubidium
- Influence of Thermocycling in Water on Ion-Exchanged Porcelain
- Implication of Protein Kinase C-α, δ, and εIsoforms in Ischemic Preconditioning in Perfused Rat Hearts
- Upregulation of Heme Oxygenase-1 in an Animal Model of Takotsubo Cardiomyopathy
- OE-139 Up-regulation of Cyclooxygenase 2 (COX-2) in an Animal Model of Takotsubo Cardiomyopathy(OE24,Autonomic Nervous System (H),Oral Presentation (English),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)
- Soft K^π=0^+ modes unique to deformed neutron-rich nuclei(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
- Rotating RPA Calculation for Collective Vibrational Modes built on Superdeformed Bands in the ^Ca Region(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
- Comparative Study of Octupole Excitations on Superdeformed States in ^S, ^S, ^Ca and ^S(Nuclear Physics)
- Stream Mining for Network Management(Network Management/Operation)
- Asymmetric Characteristics of Internet Based on Traffic Measurement and Analysis(New Technologies in the Internet and their Applications)
- High-Speed IP Meter HIM and Its Application in LAN/WAN Environments(Special Issue on New Technologies in the Internet and their Applications)
- Fracture Analysis of Hydrogen-charged nickel-Titanium Superelastic Alloy
- Shape Recovery of Shape Memory Alloy Fiber Embedded Resin Matrix Smart Composite after Crack Repair
- Acoustic Emission and Thermal Expansion Measurements for Gypsum-bonded Investment in Casting Flask during Thermal Processing
- IS063 MAP kinase activation and early immediate gene induction in the rat myocardium after psychological stress
- PE-032 Up-regulation of Hemeoxygenase 1 in an Animal Model of Takotsubo Cardiomyopathy(Autonomic nervous system(03)(H),Poster Session(English),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)
- Strengthening of Calcium Phosphate Cement by Compounding Calcium Carbonate Whiskers
- Surface-layer Modification of Hydroxyapatite Ceramic with Acid and Heat Treatments
- Surface Modification of Titanium with Hydrothermal Treatment at High Pressure
- Estimation of Residual Stress in Dental Porcelain by Laser-Raman Spectroscopy
- The ex vivo production of ammonia predicts L-asparaginase biological activity in children with acute lymphoblastic leukemia
- Acoustic emission signals from phosphate-bonded investment during compressive and diametral tensile tests
- P-10 Thermal Properties of Leucite-containing Porcelain : Influence of leucite content
- Acoustic Emission Signals from Gypsum-bonded Dental Casting Molds during Thermal Processing
- Effects of Surface Oxide Films on Hydrogen Absorption and Mechanical Properties of Titanium
- Bullous exudative retinal detachment due to infiltration of leukemic cells in a child with acute lymphoblastic leukemia
- An Epidemiologic and Histopathological Study of Sudden Cardiac Death in Osaka Medical Examiner's Office : PANEL DISCUSSION ON SUDDEN CARDIAC DEATH : The Current Status and Management
- Dynamic Behavior Evaluation of Martensitic Transformation in Cu-Al-Ni Shape Memory Alloy Using Acoustic Emission Simulation by FEM
- Visualization of Hydrogen Distribution in Tensile-Deformed Al-5%Mg Alloy Investigated by means of Hydrogen Microprint Technique with EBSP Analysis
- Dynamical Pairing and Deformation Effects on Low-Lying Modes in Neutron Drip-Line Nuclei(Poster presentation,YITP Workshop on New Developments in Nuclear Self-Consistent Mean-Field Theories (MF05))
- Effect of Aging on Acoustic Emission Behaviour During Tensile Deformation of an Al-Li-Cu-Mg-Zr Alloy
- Correlation in the mechanical properties of acrylic denture base resins
- Porosity of dental gypsum-bonded investments in setting and heating process
- Porosity of dental phosphate-bonded investments after setting and heating processes
- Collective Excitation in Exotic Nuclei(YKIS2011 papers,Frontier Issues in Physics of Exotic Nuclei)
- Microscopic Analysis of Shape Coexistence/Mixing and Shape Phase Transition in Neutron-Rich Nuclei around ^Mg(YKIS2011 papers, Frontier Issues in Physics of Exotic Nuclei)
- Comparative Study of Octupole Excitations on Superdeformed States in ^S, ^S, ^Ca and ^S(Nuclear Physics)
- Microscopic Analysis of Shape Coexistence/Mixing and Shape Phase Transition in Neutron-Rich Nuclei around ^Mg