The Vibrational Properties of Wood. II.
スポンサーリンク
概要
- 論文の詳細を見る
When the moisture content is reduced from the air-dried state, the internal friction of wood increases and the peak in tan 6-frequency curve shifts to the lower frequency. The Young's modulus and tan δ decreases and peak of tanδshifts to the higher frequency with the increase of temperature at the absolutely dried state. The experimental activation energy was found to be about 1000 cal/mol. It is larger for the broad-leaved tree than for the needle-leef tree. The frequency character of tanδcan be explained by superposing both Eyring's and Newton's viscosity.
- 社団法人日本物理学会の論文
- 1951-12-25
著者
関連論文
- Piezoelectric Characteristics of Polymer Film Oriented under a Strong Magnetic Field
- Piezoelectric Poly-L-Lactic Acid Film Prepared by a New Method
- Ferroelectric Switching Behavior in Thin Fibs of Polyurea-5
- Synthesis of Aliphatic Polyurea Films by Vapor Deposition Polyrmerization and Their Piezoelectric Properties
- Piezoelectric Properties of Nylon 79 Thin Films Prepared by Vapor Deposition Polymerization
- Piezoelectric and Ferroelectric Properties of Polyurea Thin Films Copolymerized by Vapor Deposition Polymerization of Aliphatic and Aromatic Monomers
- Piezoelectric and Dielectric Properties of Aromatic Polyureas Synthesized by Vapor Deposition Polymerization
- Fourier Transform Infra Red Observation of the Orientation of Dipolar Urea Bonds in Polyurea during Corona Poling
- Dielectric Relaxation in Polyurea Thin Films Prepared by Vapor Deposition Polymerization
- Dependence of Piezoelectric and Pyroelectric Activities of Aromatic Polyurea Thin Films on Monomer Composition Ratio
- Poling Dynamics and Negligible Relaxation in Aromatic Polyurea Studied by In Situ Observation of Second-Harmonic Generation
- Optical Second Harmonic Generation from Poled Thin Films of Aromatic Polyurea Prepared by Vapor Deposition Polymerization
- Pyroelectricity in Poled Thin Films of Aromatic Polyurea Prepared by Vapor Deposition Polymerization
- Transverse Sound Velocity of the Ferroelectric Copolymer Film of Vinylidene Fluoride and Trifluoroethylene
- Dielectric and Piezoelectric Properties of 0.91Pb(Zn_Nb_)O_3-0.09PbTiO_3/ Polyvinylidene Fluoride Composites Produced by the Sol-Gel Method
- Pockels Effects of Polyurea-5 Film Prepared by Vapor-Deposition Polymerization
- Temperature Dependence of Switching Characteristics in Polyurea-5 Thin Films
- Ferroelectric Behavior in Thin Films of Polyurea-5
- Ferroelectric Behavior in the Copolymer of Vinylidenefluoride and Trifluoroethylene
- Piezoelectric Effects in Collagen
- Electromechanical Properties in the Composites of Epoxy Resin and PZT Ceramics
- New Piezoelectric Polymers
- Callus Formation by Electret
- On the Piezoelectric Effect of Bone
- Piezoelectric Characteristics of Poly($\gamma$-benzyl-l-glutamate) Film Oriented under Strong Magnetic Field
- Piezoelectricity of Poly(l-lactic Acid) Composite Film with Stereocomplex of Poly(l-lactide) and Poly(d-lactide)
- Electromechanical Properties of Poly-L-Lactic Acid
- On the Stripe Pattern during Rolling of Viscous Materials
- The Vibrational Properties of Wood. II.
- The Relation between Dynamic Elastic Modulus, Internal Friction, Creep and Stress Relaxation in Polymethyl Methacrylate
- On the Relation between Creep and Vibrational Loss of Polymethylmetacrylate.
- The Vibrational Properties of Wood I.
- On the Piezoelectric Effect of Silk Fibers
- Piezoelectricity of Wood
- Sensing Using Piezoelectric Chiral Polymer Fiber (Special Issue : Ferroelectric Materials and Their Applications)
- Piezoelectric Poly-L-Lactic Acid Film Prepared by a New Method
- Vibration Control of Piezoelectric Lead Zirconate Titanate Ceramics Using Negative Capacitance
- Piezoelectric Characteristics of Polymer Film Oriented under a Strong Magnetic Field
- Elasticity Control of Piezoelectric Lead Zirconate Titanate (PZT) Materials Using Negative-Capacitance Circuits
- Temperature Dependence of Switching Characteristics in Polyurea-5 Thin Films
- Basic Study of Elasticity Control of Soft and Hard Piezoelectric Materials Using Different Types of Negative-Capacitance Circuits
- Basic Study of Application for Elasticity Control of Piezoelectric Lead Zirconate Titanate Materials using Negative-Capacitance Circuits to Sound Shielding Technology
- Piezoelectric Motion of Poly(l-lactic acid) Film Improved by Supercritical CO2 Treatment
- Vibration Control by Magnetostrictive Actuator Coupled with Negative Inductance Circuits
- The Vibrational Properties of Wood I