Permanent joints are engineering joints of two or more parts (components, conductors) and are made by joining, Permanent joints. material closed. force-closed. (non-positive). form-closed. (positive). soldered joints. pressed joints. wire-wrap joints.welded joints. crimped joints. glued joints. notched joints. - Permanent joints are used to join (connect) materials. - Permanent joints must withstand the same mechanical and electrical stress as the materials to be joined.- Permanent joints can only be detached by destruction of the joining elements or of the parts joined.
Mechanical Joints Overview – Part I – Permanent Joints. written by: johnsinit • edited by: Lamar Stonecypher • updated: 6/26/2009. Choosing the right type of mechanical joint for specific application has always remained a challenge when it comes to satiating all your requirements. At present there are various joints that suit the specific requirement and are related to the metals that require fastening. There are basically two major categories of joints: Permanent joints and Temporary joints. This article is about the former. Permanent joints are engineering joints of two or more parts (components, conductors) and are made by joining, Permanent joints. material closed. force-closed. (non-positive). form-closed. (positive). soldered joints. pressed joints. wire-wrap joints.welded joints. crimped joints. glued joints. notched joints. - Permanent joints are used to join (connect) materials. - Permanent joints must withstand the same mechanical and electrical stress as the materials to be joined.- Permanent joints can only be detached by destruction of the joining elements or of the parts joined.[Ukrainian] [English] [Russian]. Joints in wood can be made with screws, nails, glues and knock-down [knock-down: joint made up of separate components which are designed to be easily assembled and disassembled ] components, or with frame joints such as butt joints, halving joints, mortice-and-tenon, dovetail, and box joints. Permanent joints are intended to stay put. They may make use of adhesives [adhesives: substances which can bond the surfaces of materials together ] , nails, rivets, or one of the heat processes of brazing, soldering or welding. Permanent Joints. Permanent joints are preferred where the load is high and the durability plays an important role. Some advantages are high load bearing capacity, higher yield strength of the combined structure, and better distribution of stresses through the material. There is also a decreased chance that the parts will separate. At present there are various joints that suit the specific requirement and are related to the metals that require fastening. There are basically two major categories of joints: Permanent joints and Temporary joints. This article is about the former. introduction. As it was presented in the first article of mechanical joints overview, there are two basic types of joints – temporary joints and permanent joints. The former is a type of joint that cannot be undone once made – and this is a major drawback, despite the strength and reliability. Temporary Joints. The temporary joint can be also as strong – but it is a type which can be modified according to the alteration required. The parts can be dismantled and assembled with ease thereby making it easy to transport. The Permanent Joint Headquarters (PJHQ) is the British tri-service headquarters from where all overseas military operations are planned and controlled. It is situated at Northwood Headquarters in Northwood, London. The Permanent Joint Headquarters is commanded by the Chief of Joint Operations (CJO). The current CJO is Lieutenant General John Lorimer. Riveted Joint. A riveted joint is a permanent joint which uses rivets to fasten two materials. A rivet is a structure that has a hemispherical head on one side and a cylindrical shaft on the other. At present there are various joints that suit the specific requirement and are related to the metals that require fastening. There are basically two major categories of joints: Permanent joints and Temporary joints. This article is about the former. a joint that provides a rigid mechanical connection of parts in an assembly of a machine throughout the period of use. A permanent joint usually cannot be disassembled without destroying the parts or damaging their surfaces. The. The. main types of permanent joints are riveted, welded, soldered, pressed, cemented, rolled, and combined (such as cemented and welded). The choice of type of a permanent joint is determined by the requirements of manufacture, assembly, and operation of the machine and by economic considerations.
http://www.brighthubengineering.com/machine-design/40219-mechanical-joints-overview-part-i-permanent-joints/ http://collections.infocollections.org/ukedu/en/d/Jgtz035be/2.html http://www.bbc.co.uk/schools/gcsebitesize/design/resistantmaterials/jointsrev1.shtml http://www.brighthubengineering.com/machine-design/40219-mechanical-joints-overview-part-i-permanent-joints/ http://www.brighthubengineering.com/machine-design/40530-mechanical-joints-overview-part-ii-temporary-joints/ https://en.wikipedia.org/wiki/Permanent_Joint_Headquarters http://www.brighthubengineering.com/machine-design/40219-mechanical-joints-overview-part-i-permanent-joints/ http://encyclopedia2.thefreedictionary.com/Permanent+Joint
what are permanent joints