قائمة
Suranaree University of Technology Tapany Udomphol Jan-Mar 2007. Suranaree University of Technology Jan-Mar 2007 •The distribution of roll pressure along the arc of contact shows that the pressure rises to a maximum at the neutral point and then falls off.
Tapany Udomphol May-Aug 2007 X-ray microscopy • Using an X-ray technique to detect dislocationstructure. • The most common techniques are the Berg-Barret reflection method and the Lang topography method. • The resolution is limited to 103 dislocations/mm2. Suranaree University of Technology Tapany Udomphol May-Aug 2007
closed die forging force calculation. Signup for our newsletter to get notified about sales and new products. Add any text here or remove it.
Tapany Udomphol. Suranaree University of Technology May-Aug 2007 Composition of some high temperature alloys Tapany Udomphol. Suranaree University of Technology May-Aug 2007 Presentation of engineering creep data Creep strength is …
Tapany Udomphol Suranaree University of Technology May-Aug 2007 Density of metals Density of metals Metal Density (g.cm-3) Iron 7.87 Steel 7.80 Aluminium 2.70 Magnesium 1.74 Titanium 4.54 Copper 8.96 Zinc 7.13 Nickel 8.89 Lead 11.36 Silver 10.49 Gold 19.32 Tapany Udomphol Suranaree University of Technology May-Aug 2007 Total energy consumption ...
Suranaree University of Technology May-Aug 2007 Creep and stress ruptureCreep and stress rupture Subjects of interest • Objectives / Introduction • The high te…
Stress and strain relationships for elastic behaviour
closed-die forging. Design of die depends on the processing steps, nature of work piece material, its flow stress, temperature of working, frictional condition at interface etc. (PDF) Design and Analysis of a Forging Die for ... In upset forgings, as a rule, no reduction in cross section occurs and, therefore, the stock to be chosen is of the smallest area of cross section of the component.
Tapany Udomphol. Objectives Suranaree University of Technology Jan-Mar 2007 • This chapter provides classification of metal forming processes based on types of forces applied onto metals. • Mechanics of metal forming will be outlined to understand stress criterion for plastic deformation.
Equiaxed α phase is also moreresistant to nucleation of voids higherductility.Suranaree University of Technology Tapany Udomphol May-Aug 2007. Fatigue properties of titanium alloys • Smaller equiaxed α grains are more beneficial to fatigue strength. • Crack nucleates within the lamellar region more easily than in the equiaxed α phase region.
qats.fatigue.rainflow. count_cycles (series, endpoints = False) ¶ Count number of occurrences of cycle range and mean combinations. Parameters. series (array_like) – Data series.. endpoints (bool, optional) – If True, first and last points in series are included as cycle start/end points. This is convenient if the series given is already an array of reversal points, but should in general ...
Tapany Udomphol. Suranaree University of Technology May-Aug 2007 Fatigue tests • Material is subjected to a repetitive or fluctuating stress (cyclic loading ) and will fail at a stress level much lower than that causes failure in statistic loading. • S-N fatigue test and fatigue
Tapany Udomphol May-Aug 2007 Density of metals Metal Density (g.cm-3) Iron Steel Aluminium Magnesium Titanium Copper Zinc Nickel Lead Silver Gold Suranaree University of Technology 7.87 7.80 2.70 1.74 4.54 8.96 7.13 8.89 11.36 10.49 19.32 Tapany Udomphol May-Aug 2007 Total energy consumption for the production of nonferrous metals Total energy ...
Tapany Udomphol. Jan-Mar 2007. Introduction. • Sheet metal forming is a process that materials undergo permanent deformation by cold forming to produce a variety of complex three dimensional ...
Tapany Udomphol May-Aug 2007 Objectives • This chapter provides fundamental knowledge of torsion test and significant parameters such as torque, modulus of rupture in torsion and angle of rotation will be highlighted. • Different types of torsion failures will be evaluated and differentiated from tension failures.
Tapany Udomphol. Suranaree University of Technology Jan-Mar 2006. Example: Forging hammer or drop hammer . The energy supplied by . the blow is equal to the . potential energy due to . the weight of the ram and . the height of the fall. Potential energy = mgh. Forging machine. Eq 1. Tapany Udomphol. Suranaree University of Technology Jan-Mar ...
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Tapany Udomphol Sep-Dec 2007 Friction stir welding • Friction stir welding is a solid phase bonding process used mostly in welding aluminium. • A cylindrical, shouldered tool with a profiled probe is rotated and slowly plunged into the joint line between two pieces of sheet or plate material, which are butted together. ...
3 • A static load is a stationary force or couple applied to a member. (unchanging-magnitude, point or applied point, direction)• Failure can mean a part has separated into two or more pieces; has become permanently distorted, thus ruining its geometry; has had its reliability downgraded; or has had its function
Drop-forged gearbox cover for a helicopter Tapany Udomphol Suranaree University of Technology May-Aug 2007 Forging of magnesium alloys Prototype of a magnesium forged wheel(ZK30) Produced on the basis of the corresponding aluminium part in series production for the Audi A8 Tapany Udomphol Suranaree University of Technology May-Aug 2007 Forging ...
Tapany Udomphol. Suranaree University of Technology May-Aug 2007 The upper yield point The upper yield point The upper yield point is associated with small amounts of interstitial or substitutional impurities. • The solute atoms (C or N) in low carbon steel, lock the dislocations, barb2right raise the initial yield stress.
Tapany Udomphol. Suranaree University of Technology Jan-Mar 2007 Cold IsostaticPressing (CIP) • Powder is sealed in a flexible mould (or 'bag'), of for example polyurethane and then subjected to a uniform hydrostatic pressure . CIP graphite blocks Tapany Udomphol.
Tapany Patcharawit 2001-2005 Ph.D. (Metallurgy and Materials) The University of Birmingham, UK 2000-2001 MPhil. (The Science and Engineering of Materials) ... Udomphol, M. Bunma, R. Buntan, The Fabrication of Aluminium Composites via Stir-Mixed and Particulate-Injection Casting, Advanced
2. Foraging to Agriculture Richard Lee has provided several quantitative measurements on !Kung Bushman's foraging lifestyle in Dobe-area. Lee used examples to measure the subsistence status of the foraging lifestyle such as diversity of food resources, food choice, population density, work force, work and leisure time, and nutrition in the diet.
Tapany Udomphol. May-Aug 2007 Effect of specimen thickness Larger specimen size (in-service components) provides higher constraint more brittle. If large size specimens are used, the transition temperature will increase. Large scale tests Effect of section thickness on transition temperature. Suranaree University of Technology. Tapany Udomphol ...
Ugine-Sejournet process Molten glass Suranaree University of Technology Tapany Udomphol. Jan-Mar 2007 Ugine-Sejournet process The billet is heated in an inert atmosphere and coated with glass powder before being pressed. The glass pad placed between the die and the billet provide the main source of lubricant.
تعلم لغة البايثون يمنحك بداية قوية للخوض في مجال البرمجة بكل سهولة وسلاسة، ولأنه من الصعب المضي في مجال البرمجة لغير المتخصصين، فقد أتاحت لغة البايثون الفرصة للعديد من الراغبين للعمل بمجال تطوير البرامج وغيرها ...
Tapany Udomphol. Sep-Dec 2007. Introduction. Suranaree University of Technology. Tapany Udomphol. Sep-Dec 2007. Part I: Solidification in carbon steel and stainless steel welds Carbon and alloy steels are more frequently welded than any other materials due to their widespread applications and good weldability.
Used for large castings with heavywall thickness. Higher pressure is required tocompensate high degree of shrinkage. Capacity Machine sizes upto 4,500 ton Pressure of the melt ~300-900 bar The shot is limited to 60 kg. Wall thickness from 1.5-2.5 mm.Cold-chamber die castingSuranaree University of Technology Tapany Udomphol May-Aug 2007 16.
Tapany Udomphol. Suranaree University of Technology May-Aug 2007 Interaction between fine particles and Interaction between fine particles and dislocations dislocations 1) Particles maybe cut by dislocation Second phase particles act in two distinct ways to retard the motion of dislocations. 2) ...
calculation times. 1.Part drawing of crankshaft. Design Open-die forging is carried . Tools are of strategic importance for industrial manufacturing processes. In the forging process, metal is shaped by pressing, pounding, or squeezing under very high pressure to …
Tapany Udomphol. Suranaree University of Technology Jan-Mar 2007 Objectives •This chapter provides fundamental background on processes of drawing of rods, wires and tubes. •Mathematical approaches for the calculation of drawing load will be introduced.
Tapany Udomphol May-Aug 2007 Extraction of zinc • Zinc can be extracted from zinc sulphide (ZnS) or zinc blende or sphalerite. • Found in many countries such as USA, Mexico, Peru, etc., and also in Thailand. Ores are found in the forms of 1) Smithsonite (ZnCO3) – 67% Zn 2) Hemimorphite or (Zn4Si2O7(OH)2.H2O). – 54.2% Zn 3) Zincite (ZnO ...
Tapany Udomphol. Jan-Mar 2007 Example: Forging hammer or drop hammer. The energy supplied by the blow is equal to the potential energy due to the weight of the ram and the height of the fall. Potential energy = mgh Eq 1. Suranaree University of Technology. Forging machine Tapany Udomphol. Jan-Mar 2006 Power hammer
