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Deterioration mechanism of hydrothermal aging on the properties of carbon fiber/epoxy composites in various media
Hydrothermal aging resin composite degradation mechanical property
2023/11/16
This study examined the hydrothermal aging mechanism of carbon fiber reinforced epoxy resin (CF/EP) composites in acidic, alkaline, salt solution, and deionized water (marked as Ac-CF/EP, Al-CF/EP, Sa...
Mechanism of Pull-out Performance in Lagscrewbolted Timber Joints II
Lagscrewbolt pull-out resistance Volkersen model thin plate specimens
2009/3/6
Lagscrewbolts were developed as a simple and economical moment-resisting connector for glulam frame constructions. This new type of connector is expected to show high pull-out resistance due to the s...
Mechanism of Pull-out Performance of Lagscrewbolted Timber Joints I
Lagscrewbolt lead hole embedment depth embedment direction edge distance
2009/3/6
At present, moment-resisting connections for glulam constructions are widely constituted as drift-pin joints with insert-steel gusset plates, as well as bolted joints. These joints consume much steel ...
Shearing Strength and Fracture Mechanism of Lath-mortar Wall I
Conventional wooden structure External finishing Mortal wall Staple joint Earthquake resistant design
2009/3/6
This research dealt with the shearing strength properties of mortar exterior walls with wooden lath which are used for conventional wooden house. The information is needed because mortar walls detach ...
Mechanical Properties of Wood in an Unstable State due to Temperature Changes, and an Analysis of the Relevant Mechanism II
wood block uniform elimination lignin hemicellulose
2009/3/6
In order to prepare wood specimens for subsequent measurements of mechanical properties, we examined the selective and uniform elimination of wood constituents from a 4 mm thick cross section of hino...
Mechanism of Pull-out Performance in Lagscrewbolted Timber Joints III
lagscrewbolt pull-out perpendicular to the grain Volkersen model effective area (Aw)
2009/3/6
Lagscrewbolts were developed as simple and economical moment-resisting connectors for glulam constructions. A lagscrewbolt has two threads :a screw type thread on the outside surface at one end and a ...
Mechanical Properties of Wood in an Unstable State due to Temperature Changes, and an Analysis of the Relevant Mechanism I.
quenching swollen wood variations of temperature stress relaxation fluidity
2009/3/6
To study mechanical properties of wood exposed to variations of temperature, in this study the swollen wood (water-swollen wood & ethylene glycol-swollen wood) was preheated at 30-180°C and quenched t...
The Mechanism of Liquid Movement in a Wood Cell Cavity by Continuous Visual Observation I.
liquid penetration visual continuous observation degree of suction tracheid
2009/3/6
In this research, samples of heartwood from three softwood species (hinoki, Douglas-fir and sugi) were treated by 1)hot water extraction ; 2)compression perpendicular to grain ; and 3)a method combini...
Mechanical Properties of Wood in an Unstable State due to Temperature Changes, and Analysis of the Relevant Mechanism V.
quenching thermal expansion thermal decomposition destabilization
2009/3/6
In order to define the effects of thermal expansion and thermal decomposition on the destabilization of quenched wood, we measured the stress relaxation of steam-treated wood and oven-dried wood under...
Mechanism of Regulation of Cambial Activity in Trees
auxin cambium plant hormones secondary xylem wood formation
2009/3/4
The quantity and quality of wood are controlled by cambial cell division and the process of xylem differentiation of cambial derivatives. This paper summarizes cell biological and tree physiological ...