This experiment used punch trajectory as the primary factor in the experiment and examined the resulting variations of material properties, thickness and friction coefficients as responses. Once this particular approach to springback control is illustrated, this paper will divulge on a few techniques used to control springback. Overview: Experimental Implementation of Neural Network Springback Control for Sheet Metal Forming The problem of springback in a bending process within sheet metal forming, identified by Viswanathan, Kinsey and Cao, includes the region around the neutral plane which the material undergoes both elastic and plastic deformation. Once the final draw depth is achieved and the punch is removed, the part recovers its elastic strain. Due to the non-uniform stress that is distributed in the sheet, the part's final shape is different that the what it's shape was under load.
Intron load frames with movable crossheads are usually used to test the tensile properties of metal samples... ... middle of paper ... ...ted value with a 9.42 % difference between the two. ACKNOWLEDGEMENTS Materials and equipment used to perform this experiment were provided by the Mechanical Testing Instructional Laboratory (MTIL) at the University of Illinois at Urbana-Champaign. This lab report utilized experimental data obtained in a tension test performed on September 17, 2013 at the MTIL. All the discussion and analysis were conducted based on the data file and the video that are available on the MTIL server. REFERENCES D.R.
Tool steels are utilized on a wide variety of application including forming, shearing, cutting and molding (manufacturing the tools, dies, and molds) where (due to their remarkable properties) high wear resistance, hardness, strength, toughness, heat resistance and other properties are preferred for optimum performance. In addition to alloying, tools steels are considered special because they are very difficult to manufacture and require careful manufacturing in every processing step. The very high alloy content and special microstructure that make them desirable for severe applications also make them difficult to manufacture [ , ]. High-carbon, high-chromium (AISI D series) cold-work tool steels are of the main groups of tool steels which are identified with their high wear resistance and exceptional nondeforming properties. The excellent wear resistance of D-type cold-work tool steels is the result of their high chromium (~12wt.%) and high carbon (1.5 to 2.35wt.%) contents.
(Helvatjoglu et al) The article by Dr. Nuray Attar focused on the comparison of the flexural strength and elastic modulus of condensable and hybrid composite resins. The study focused on fou... ... middle of paper ... ...007 vol.21 no.1 Helvatjoglu-Antoniades M, Papadogiannis Y, Lakes RS, Dionysopoulos P, and Papadogiannis D. Dynamic and Static Elastic Moduli of Packable and Flowable Composite Resins and Their Development After Initial Photo Curing. Dent Mater. 2006; 22: 450-459. Kostantinos M, Silikas N, and Watts DC.
Composite Materials Laboratory Report Introduction to Materials Engineering (MatE25) Lab Section 8 by Carolyn Jaring Laboratory Instructor: Joshua Moore March 11, 2014 Introduction Composites are materials that are made out of two or more constituent materials with significantly different mechanical properties which when combined produce an overall material that is better than the individual components. Different types of composites include Ceramics, Composite Building Materials, Fiber-reinforced materials, and metal composites. Fiber reinforced materials are made up of axial particulates that are embedded within a matrix. The matrix of this said composite is epoxy. Epoxy is a thermoset polymer.
841-852, 1993 20. S. Thamizhmnaii , B. Bin Omar, S. Saparudin, S. Hasan, ‘Surface roughness investigation and hardness by burnishing on titanium alloy’,AMME journal, Volume 28 Issue 2 June 2008 21. Fritz Klocke,Vladimir Bäcker,Hagen Wegner,Björn Feldhaus,Hans-Uwe Baron,Roland Hessert, ‘Influence of process and geometry parameters on the surface layer state after roller burnishing of IN718’, German Academic Society for Production Engineering (WGP)
“Feasibility study of 4D CAD in commercial construction”, Journal of Construction Engineering and Management, Vol 126, No4, pp. 251-260.  Staub-French, S., Khanzode, A., (2007). “3D and 4D modeling for design and construction coordination: issues and lessons learned”, ITcon Vol. 12, pp.381-407.
Tensile Test: The objective of this test is to estimate the ultimate strength, young’s modulus and strain to failure of the laminated composite. The samplings are made following ASTM 3039 specifications . Accordingly, the specimens of 250mm*2.5mm*25mm dimension were prepared. The load-displacement curve shown in Fig 3 directly gives the final load, i.e. the load at which the specimen breaks.
These properties were restricted to the tensile material strength of the laminate being tested. The test was performed using the macro-mechanical approach. The tensile test was performed on specimens with different fibre orientation, from the data obtained it was used to estimate the tensile strength of the composite. The test was limited to static behaviour, ambient conditions, and the failure behaviour of the composite was observed and recorded. The test consisted of acquiring a force-displacement graph of the specimen under tensile loading using the Instron 8800 tensile testing machine.
 Mathematical model for any optimization problem involves an objective function, parameters to be optimized and some physical constraints for a more realistic output. This research work is to predict optimized cutting parameters and get the desired surface roughness values in minimum machining time for the proposed work materials. Based on the effect of cutting parameters on the surface roughness, it is found that the feed and depth of cut are directly proportional to the surface roughness and the cutting speed is inversely proportional to the surface roughness. Based on these facts, empirical relations are formed. [15,