Lab report about tensile testing Lab report about tensile testing 8 August Technology Introduction This mechanical testing is demonstrated the relationship between stain and stress for a certain material while it undergoes a tension force. And define the type of facture of them, which are two metallic, copper and low carbon steel and two polymeric, acrylic and acetone.
Clay, John F and J. The LNER and classes. From Cock o' the North to Saint Johnstoun.
Joined the GNR in and was a driver for 33 years until retirement in Described a trip on Cock o' the North with Gresley on the footplate: Backtrack,28, A fairly superficial account which briefly trails a group which is hoping to construct a replica at Doncaster.
The power of the Gresley P2 Mikados. I helped to build Mons Meg. He was a Stratford apprentice and was awarded the scholarship at Queen Mary College with the vacations spent at Doncaster Works where he encountered Eggleshaw and was involved in the construction of the P2 which used an experimental boiler lagging made from metal foil.
At one time or another almost all the recognised forms of installing and lubrication had been used for the driving boxes of those engines, but their latest design, and one which seemed to be giving good results, was a box with a machined oil groove gin. Mechanical feed for the oil was used, and all boxes were provided with an Armstrong pad in the tray, giving an auxiliary under-feed lubrication.
Their larger oil boxes, previously mentioned, are normally of the type which have three white metal pads keyed to serrations machined right across the box.
The pads are divided by bronze bars at 45' to the vertical centre line. Each bar is provided with a machined oil groove, the back groove being fed by mechanical lubrication and the front bar by an auxiliary syphon feed.
In service those boxes gave no trouble, but it was with regard to that type of box that the President had expressed the view that it would be of interest to show some slides dealing with the hot boxes experienced on the Vitry testing plant.
The engine had done a very substantial mileage in England before being placed on the plant, and from the time of leaving the works in England to going over to France not one hot journal bearing had occurred.
On trials in this country speeds of over 80 m. On the stationary testing plant, however, the heating of the boxes was a constant anxiety, and many days which could have been spent in obtaining test data were lost while overhauling took place.
On the test bed oils brought from England were first used, but trials were also made with pure rape oil and with the oil used by the French railways. Standard qualities of white metaI were used as well as metal provided in France. The boxes started with the standard bronze bars, but boxes were also tried with a white metal crown.
The next slide showed one with a single oil groove at one side, the other being filled up with white metal. The following slide showed one with a solid white metal crown.
The oil-ways were gradually being filled up with white metal. It all went to show, he thought, that there were very definite limits to theorising about what really happened within the lubricating film on a locomotive axlebox, and, valuable as theory might be, it was experience in running under traffic conditions which must be the final criterion.
The next slide showed a box with the lubrication slots cut in the fop of the box and at one side, which did not prove very satisfactory. The white metal did not function very well. The very bad markings shown in the last slide were put down to hydraulic action between the axlebox guide and the horns.
Excellent photographs, but very concise text. Edinburgh and Dundee trains, "P2" class engines.Type or paste a DOI name into the text box. Click Go. Your browser will take you to a Web page (URL) associated with that DOI name.
Send questions or comments to doi. Conic Sections in Taxicab Geometry - In this essay the conic sections in taxicab geometry will be researched. The area of mathematics used is geometry. The setup of the experiment could be changed to accommodate different types of mechanical testing, according to the ASTM standard (e.
G. Compression test, etc). For analytical purposes, a plot of stress (o) versus strain (E) Is constructed during a tensile test experiment, which can be done automatically on the software provided by the instrument manufacturer.
Introduction This mechanical testing is demonstrated the relationship between stain and stress for a certain material while it undergoes a tension force.
And define the type of facture of them, which are two metallic, copper and low carbon steel and two polymeric, acrylic and acetone. The purpose of this test is to determine the tensile properties of a certain type of brass with different initial sizes (length, width and thickness).
Four different size combinations were tested. An Instron testing device was used to test each piece until fracture; an example of this machine can be seen in fig.
3. Aims & Objective The objective of this experiment is to investigate the behaviour of different material specimens under tensile test. The materials to be investigated are brass, % carbon steel, %carbon steel and aluminium.