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Data Models For Product Modification using Reverse Engineering

Reverse engineering is the process of giving out a system, device or object to view the different parts of this object and try to understand how each of them work with the others to create one functional unit. Reverse engineering is an essential process since it allows people to gain a view of technology in work and know how it can be utilized and optimized. The the process can lead to improvements through the innovation of applied technology, making inventions even better.

Initially, reverse engineering relied on analog and GPS scanning technology to collect the spatial data of objects and operating systems. Today laser scanners have replaced these traditional methods.

The 3D laser scanners offer several advantages over the traditional scanning methods especially when it comes to the time and cost of scanning. Laser scanners are employed in the process of reverse engineering for a variety of applications but each case, the scanning results are used to make models that allow the firms to fabricate objects with a lot of ease. Some of the models include the parametric models, hybrid surface models and the shrink wrap surface models.
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The Parametric Models
The parametric models turn realistic data from scanned data and include or ignore manufacturing defects. That is, a parametric model’s parameters are shown in finite-dimensional parameter spaces, separating them from nonparametric models, semiparametric models, and semi-nonparametric models. This model is used when 2D drawings are needed, when the surface of a product is required to be smooth, the parts will be built on a scanned part or when the scanning data are conceptually modified.
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Hybrid Surface Model
Similar to the parametric models, hybrid surface models can convert realistic data from scanned data, and can ignore or include the manufacturing defects. Hybrid surface models are suitable for when the modification of an object requires re-trimming or must be a class-A surfaced. Hybrid surface models, just like their name suggest, are used in the modification of the surface of objects, and are therefore ideal when superficial modifications are made to an object. The the hybrid surface mode is ideal for 2D drawings when the object’s surface finish must be smooth, and when building on or around a scanned object.

Shrinkwrap Surface Model
The shrinkwrap surface models are used to take objects in their original state including the manufacturing defects; hence they are ideal for designing parts to accommodate as-built models. There are three type of shrink wrap models–surface subset models, which are used to create a collection of outside surfaces and datum figures; solid faceted models, which are used to provide an approximate representation of the original item; and the subset surface models used to approximate the visual representation of the initial object.