Affect Bond Strength Research Articles

Clinical factors affecting the strength of composite resin to enamel bonds

When adhesive bonding anchors composite resin to tooth enamel, a good restoration can be made. This study analyzes clinical factors affecting bond strength with emphasis on sources of air used while restoring teeth.

Mechanical Properties of Adherend Alloys Affecting Bond Strength of Adhesive Resin Cement

Mechanical Properties of Adherend Alloys Affecting Bond Strength of Adhesive Resin Cement

Joining strength of sheet molding compounds

AbstractBonding and bolting strengths of a sheet molding compound (SMC‐R30) are investigated. Epoxy adhesives are found to give good bonding strength. Surface pretreatment does not affect bond strength. Artificial weathering has practically no effect upon bond strength. Bolting strength depends on the width of the specimen for a certain bolt size. Bolting gives stronger joints than bonding.

Evaluation of fourteen direct-bonding orthodontic bases

Design characteristics (area of bonding, mesh size, and type) and bond strength of fourteen commercial direct-bonding metal bases with commercially attached brackets were evaluated. Tensile bond strength was measured with two direct-bonding adhesives, using plastic and natural teeth as substrates. Statistically significant differences in bond strength were observed among the bases, but bond strength was independent of nominal area and mesh size of the bases. Bond failures occurred most frequently at the base-adhesive interface of the metal bases. Damage caused by spot-welding of brackets to bases was implicated as a factor affecting bond strength.

Factors Affecting Bond Strength between the Elements of Tires

Abstract 1. Ply separation of tires is one of the essential factors reducing their mileage, particularly under difficult service conditions. Enhancement of the dynamic bond strength between elements of the tires is a most important line of study for increasing the mileage of tires based on synthetic rubber. 2. An analysis of defects in tires failing as a result of separation shows that for a given level of technical proficiency in handling synthetic rubber the adhesion type of separation between pliedup compounds or between rubber and cord (of viscose filament) is predominant. This form of failure is particularly characteristic of tires with vulcanizates based on butadiene/styrene rubber in all the main parts. 3. In investigations concerning separation phenomena in tires, decisive importance attaches to methods of determination of bond strength under conditions of dynamic loading of pliedup vulcanizates and rubber cord systems. We still do not have methods which could be regarded as fully satisfying the requirements proposed. However a series of methods have been provided which make it possible to assess, with an accuracy suitable for practical purposes, the effect of this or that factor upon the bond strength and to show the advantages and inadequacies of pliedup systems from the point of view of the operation of tires under actual service conditions. 4. The experimental results obtained show that the dynamic bond strength in pliedup systems, as also the endurance of the tires in relation to separation resistance, is determined by a complex body of physico-chemical and technological factors, by the construction of the articles, and also by the pattern of loading under repeated deformations. The general theoretical ideas developed in articles by some investigators, that the highest bond strength is to be achieved where full adhesion of the raw pliedup stocks takes place, as shown by the disappearance of boundaries between them, and that in all cases the factors which enhance the flowability of the stock enhance also the bond strength between them, were not confirmed experimentally.