ISSN:0021-8995    

DOI:10.1002/app.1962.070062001

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractThis paper describes European use of glued construction for structural joints in aircraft. It discusses the important considerations in design and strength analysis of stiffened compression and shear panels and considers aspects of detail design in bonded structures.

ISSN:0021-8995    

DOI:10.1002/app.1962.070062002

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractEssentially the entire surface of the U. S. Air Force B‐58 supersonic bomber is aluminum‐bonded panel construction. Primary as well as secondary structural bonded panels were designed and manufactured to operate under demanding service conditions which include high stress, subzero temperature, high temperature, and severe acoustical vibration. Smooth surfaces are an additional requirement at subsonic and supersonic speeds. These requirements demanded that bonded joints in the B‐58 be carefully designed and thoroughly evaluated. Joints in the B‐58 were designed by “empirical procedures,” established for a specific adhesive syetem. Large numbers of test panels were required to confirm panel integrity and establish allowables for design. The development and adoption of accurate theoretical technique for predicting joint streqgths has been pursued and can be expected to reduce both the cost and the amount of testing required to achieve reliable deign wit

ISSN:0021-8995    

DOI:10.1002/app.1962.070062003

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractIn this paper the subject of peel is divided into two parts: (1) A mathematical determination of peeling stresses in an adhesive bond due to the applied peeling loads which leads to a mathematical definition of “peel strength.” (2) A review of suitable peel test methods examined in the light of this definition. Employing the assumption that the adhesive bond behaves as an ideal homogeneous elastic material under load, the classical derivation of the deflection of a loaded beam on an elastic foundation is applied to the calculation of peel strength of a metal adhesive. This theory results in a mathematical definition of peel strength and offers a reasonable explanation of the effects of the important variables such as metal and adhesive thickness and strength properties and provides a basis for the comparison and evaluation of the few testing methods presently in

ISSN:0021-8995    

DOI:10.1002/app.1962.070062004

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractLoading a lap joint in tension causes the adherends to increase their tensile stress over the nominal because of the bending produced by the offset of the joint. Knowing the configuration of the joint and the tensile stress, the stress distribution in the adherends outside the joint can be determined. The theory, with resulting equations, is based on the assumption that the adherends act like a plate bent to a cylindrical surface. If the bending of the adherends is eliminated by the use of a double overlap joint, the stress distribution in the adhesive can be determined. This analysis is based on existing mathematical findings of the load distribution in riveted joints. The resulting equations have been proven experimentally by the use of the photo stress technique, and can be applied to adhesively bonded, soldered, brazed, welded, and under certain conditions, riveted joints.

ISSN:0021-8995    

DOI:10.1002/app.1962.070062005

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractIf an adhesive joint is to be strong and permanent its adherend surfaces must be treated at least to remove oil, dirt, and dust. In addition, control of surface roughness, oxide formations, and sometimes adsorbed water is required. Deposition of chromium atoms or TiO2is indicated for electron donor metals surfaces, and treatments may be useful to protect the adhesive from the adherend or vice versa, or to make their structures more congenial.

ISSN:0021-8995    

DOI:10.1002/app.1962.070062006

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractStructural adhesives are one of the more important developments in the adhesives field because they make possible bonded assemblies in lightweight structures which take full advantage of the strengths of the materials used. Structural adhesives can be divided into two classes. One class consists of hard brittle resins typified by unmodified epoxy adhesives which have high shear and tensile strengths but low peel strength. The second class consists of a combination of resins resulting in a more ductile type of adhesive which has high peel strength along with high shear and tensile strength. One application is described here in which an epoxy adhesive is used in a design which minimizes peel forces and which causes failure of the bonded assembly in the metal. The evaluation of this design showed it to be successful.

ISSN:0021-8995    

DOI:10.1002/app.1962.070062007

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractAlthough considerable research has been conducted to establish the performance of various adhesives under different conditions of service, much remains to be done. Of great importance are basic studies of the mechanisms of deterioration of adhesives in joints under known conditions so that reliable short‐term performance tests may be devised to determine the expected performance of adhesives under various service conditions. Such research needs will undoubtedly be increased in importance by the continued introduction of new adhesives of different chemical types. In all probability, the nature of the adherend influences not only initial adhesion but also subsequent joint performance. Most experience reported here on permanence of joints has been gained with wood, but research on metal adhesives is also reviewe

ISSN:0021-8995    

DOI:10.1002/app.1962.070062008

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractThis paper discusses the technology of adhesives employed in printed circuitry. The chemical types of adhesives are described and their general characteristics are given. Typical printed circuit processes are used to spotlight the demands placed on the adhesives. Test methods and requirements peculiar to printed circuitry are discussed in detail, and particular emphasis is placed on those properties which will not be too obvious to the adhesives technologist unfamiliar with circuitry. Secondary applications of adhesives in printed circuitry are touched on briefly, and mention is made of bonding methods in use or under development which do not employ adhesives. Numerous literature references are given.

ISSN:0021-8995    

DOI:10.1002/app.1962.070062009

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY

摘要:

AbstractSpecial adhesives for bonding of unvulcanized and vulcanized elastomers are discussed. Major emphasis is placed on adhesives and conditions for bonding of vulcanized elastomers. The decline of brass plating is reviewed. Various methods of adhesion testing are discussed and illustrated. Available organic polymer based adhesives will produce high strength bonds to a wide variety of unvulcanized olefinic elastomers. A single coat adhesive has been developed which provides “maximum performance adhesive bonds” to a variety of unvulcanized elastomers. Factors affecting bonding and “bondability index” for the common elastomers are described. The bonding of vulcanized elastomers is a more difficult task. Present adhesives require mechanical or chemical modification of the surface of the elastomer. Brute force tactics used in conjunction with epoxy‐polyamide, phenolic‐polyvinyl formal, or nitrilephenolic systems have performed well in some applications. The quality of these bonds, however, does not equal those produced to unvulcanized elastomers. With cooperation of the users, the adhesive suppliers are developing newer, more effective products to meet the challenge of the advanced polymers and increasingly severe environments in which th

ISSN:0021-8995    

DOI:10.1002/app.1962.070062010

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1962

数据来源: WILEY