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Reengineering can refer to:

(Re-Engineering is creating a new piece of software with similar functionality as an existing one[devil], 2016)

In absence of design data, the reverse engineering process is considered as a main tool for modeling. Reverse engineering process involves identifying the geometry of existing part, creating a geometric model of the part from the identified data and passing this model to designing software for manufacturing. [1] Reverse engineering technology is considered an important tool in a variety of manufacturing applications. It considerably reduces the production lead time and the costs of the part duplication processes. [2] sometimes manufactured objects are designed using CAD (Computer-Aided Design) software but there are many software in the market. For imagining, data exchange or manufacturing applications, the geometric model has to be discretized into a 3D mesh composed of a finite number of vertices and edges. And new method was proposed method is validated on 3D meshes. [3] Bernard showed one of many process plans selected and modified to fit with the new part. His concept can save a lot of time and can be applied to many fields of industrial manufacturing; design, planning, production, etc. Feature-based design tools have been applied to many applications. [4]

The Computer-aided Reverse Engineering (CARE) creates a computer model of an object by adapting in digital form real object geometry, and the fine scale texture surface properties throw measurements of the object, as it exist in the real world [5, 6]

The availability of modern design, prototyping and manufacturing systems has provided industry with high ability to bring products to market faster and ensure that they conform to specifications. The new software, associated with sophisticated finite element or computational fluids dynamics codes, have enabled designers to investigate the change in design and to select the best or optimal plans. re-engineering or Reverse Engineering is very good procedure to determine the inlet port geometry for engines. [7]

Reverse engineering has been widely recognized as a vital step in the product design cycle. However, major problems with current reverse engineering technology are the inefficient surface rebuilding process, lack of digitizing exactness control in the data digitisation process, and bottle necks resulted from enormous amounts of digitized surface points in the surface modeling process. Under this limitation, modern concurrent engineering concepts are difficult to apply for obtaining optimal product design. [8]

The goal is to study and investigate the existing Reverse Engineering (RE), Rapid Prototyping (RP) methods and processes used by the partners and develop new applications. Most users of 3D scanner have incorporated the technology in the design and manufacturing phases, mainly for purposes of reverse engineering and redesign [9]

To process 3D digitized data, contemporary CAD systems supply reverse engineering modules. These modules, however, require significant designer interference to achieve an accurate resulting model [9]

Often no intellectual property rights are breached, such as when a person or business cannot remember or find how something was done, or what something does, and needs to reverse engineer it to work it out for themselves [6]

In the paper “Improvement in CAM shaft design: an Experimental application and recommendation”, a CAM shaft has been investigated for Proton Campro engine 3.0L V4 engine. The new design improved the cam profile peak point in of camshaft to be controllable at different speeds through a hydraulic system using reverse engineering processes. [10]

[null 1. Chintala, G. and P. Gudimetla, Optimum Material Evaluation for Gas Turbine Blade Using Reverse Engineering (RE) and FEA. Procedia Engineering, 2014. 97: p. 1332-1340.]

[null 2. Chow, J., et al., Development of an integrated laser-based reverse engineering and machining system. The International Journal of Advanced Manufacturing Technology, 2002. 19(3): p. 186-191.]

[null 3. Bénière, R., et al., A comprehensive process of reverse engineering from 3D meshes to CAD models. Computer-Aided Design, 2013. 45(11): p. 1382-1393.]

[null 4. Bernard, A., Global Product Development: Proceedings of the 20th CIRP Design Conference, Ecole Centrale de Nantes, Nantes, France, 19th-21st April 2010. 2011: Springer Science & Business Media.]

[null 5. Galantucci, L., et al., Semi-Automatic Low cost 3D Laser scanning systems for reverse engineering. Procedia CIRP, 2015. 28: p. 94-99.]

[null 6. Raja, V. and K.J. Fernandes, Reverse engineering: an industrial perspective. 2007: Springer Science & Business Media.]

[null 7. Chant, A., D. Wilcock, and D. Costello, The determination of IC engine inlet port geometries by reverse engineering. The International Journal of Advanced Manufacturing Technology, 1998. 14(1): p. 65-69.]

[null 8. Chen, L.-C. and G.C. Lin, Reverse engineering in the design of turbine blades–a case study in applying the MAMDP. Robotics and Computer-Integrated Manufacturing, 2000. 16(2): p. 161-167.]

[null 9. Krause, F.-L., The Future of Product Development. 2007: Springer.]

[null 10.] Al-Khaldi, M., et al., Improvement in CAM shaft design: an Experimental application and recommendation. Applied Mechanics & Materials, 2015.