A study of the effect of fiber treatment on stress distribution in glass-reinforced plastic structures

1967 ◽  
Vol 3 (2) ◽  
pp. 65-68 ◽  
Author(s):  
G. A. Fo Fy
Keyword(s):  
Stress Distribution ◽  
Reinforced Plastic ◽  
Fiber Treatment

Influence of the local bond stress distribution of FRP rebars on the anchorage in concrete

2019 ◽  
Author(s):  
Christian Caspari ◽  
Matthias Pahn
Keyword(s):  
Stress Distribution ◽  
Bond Stress ◽  
Building Structures ◽  
Force Transmission ◽  
Surface Geometry ◽  
Bond Lengths ◽  
Pull Out ◽  
Repair Costs ◽  
Reinforced Plastic ◽  
The Individual

<p>Poor durability of building structures leads to high repair costs. The durability of reinforced concrete structures is largely dependent on the corrosion resistance of the reinforcing steel. For applications which are highly endangered by corrosion, fibre-reinforced plastic (FRP) offer a solution. A basic prerequisite for the long-term functionality of a composite material is the bonding of the individual components. The lower modulus of elasticity and the different surface geometry of glass fibre- reinforced plastic (GFRP) reinforcement compared to steel reinforcement lead to a change in the bond stress distribution. This results in different bond splitting effects and load introduction lengths. In this paper, the bond stress distribution over the bond length of steel bars and FRP bars is compared. For this purpose, pull-out tests with short and long bond lengths are investigated. The force transmission from FRP to the concrete is measured by means of a fibre-optic measurement of pull-out tests with long bond lengths and compared with results from the literature.</p>

Stress distribution around a single bolt in fibre-reinforced plastic

Composites ◽  
1982 ◽  
Vol 13 (3) ◽  
pp. 316-322 ◽  
Author(s):  
F.L. Matthews ◽  
C.M. Wong ◽  
S. Chryssafitis
Keyword(s):  
Stress Distribution ◽  
Reinforced Plastic

The concerted use of SEM, TEM, and SCM for examination of resin-dentin interfaces

1994 ◽  
Vol 52 ◽  
pp. 476-477
Author(s):  
B. Van Meerbeek ◽  
L. J. Conn ◽  
E. S. Duke
Keyword(s):  
Surface Layer ◽  
Stress Distribution ◽  
Phosphoric Acid ◽  
Bonding Mechanism ◽  
Restorative Dentistry ◽  
Dental Adhesive ◽  
Low Viscosity ◽  
Dentin Adhesives ◽  
Acid Etch ◽  
Tooth Tissue

Restoration of decayed teeth with tooth-colored materials that can be bonded to tooth tissue has been a highly desirable property in restorative dentistry for many years. Advantages of such an adhesive restorative technique over conventional techniques using non-adhesive metal-based restoratives include improved restoration retention with minimal sacrifice of sound tooth tissue for retention purposes, superior adaptation and sealing of the restoration margins in prevention of caries recurrence, improved stress distribution across the tooth-restoration interface throughout the whole tooth, and even reinforcement of weakened tooth structures. The dental adhesive technology is rapidly changing. An efficient resin bond to enamel has already long been achieved. Its bonding mechanism has been fully elucidated and has proven to be a durable and reliable clinical treatment. However, bonding to dentin represents a greater challenge. After the failures of a dentin acid-etch technique in imitation of the enamel phosphoric-acid-etch technique and a bonding procedure based on chemical adhesion, modern dentin adhesives are currently believed to bond to dentin by a micromechanical hybridization process. This process is developed by an initial demineralization of the dentin surface layer with acid etchants exposing a collagen fibril arrangement with interfibrillar microporosities that subsequently become impregnated by low-viscosity monomers. Although the development of such a hybridization process has well been documented in the literature, questions remain with respect to parameters of-primary importance to adhesive efficacy.

Sign in / Sign up

Export Citation Format

Share Document