Scientific techniques refer to procedures that are informed by technical or logical postulates in developing practical mechanisms or systems. Scientific principles refer to methods based on empirical and measurable facts for measuring and investigating a particular phenomenon. Scientific principles and techniques therefore are strategies and techniques used to investigate a phenomenon, validate facts, or reject a thesis based on empirical and measurable facts (Jarrett 2009, p. 219). In engineering, scientific methods determine the quality and level of material used for the final assembly stage.
Scientific principles and techniques are essential in promoting research in different areas of engineering. Engineers examine the concepts and principles applied in the area to determine whether they function properly based on measurable factors like durability and the life of the product. Scientific principles and techniques are also vital in improving engineering concepts and practices. Through engineering principles and concepts, an engineer can establish systems that are likely to function poorly using the material data available on productivity and speed.
Proper evaluation of the scientific data offers engineers a chance of improving the efficiency of their systems as they can invite new concepts to correct the identified weaknesses. In this respect, scientific principles and techniques in engineering function as the benchmark for quality of the engineering elements (Jarrett 2009, p. 219). In most cases, engineers measure their productivity by examining what the principles and techniques provide for given a certain level of input. When the quality goes down, the engineers can apply the same principles to raise the quality to the required levels.
An evaluation of some of the items commonly used in the in the manufacturing and car assembly can explains the application and significance of scientific principles and techniques. For example, various scientific concepts are largely integrated in designing the automobile’s door beams. The main raw materials in manufacture of door beams include the steel and aluminum. Steel used in the manufacture of the door beams is essential in creating two main elements of the beams. Initially, steel loads the automobile with weight hence promoting equilibrium. This follows with the scientific concepts in statics that highlights that the body of the automobile must have enough weight at equilibrium in order for it to be stable (Jarrett 2009, p. 219). The weight of the steel used in manufacturing the door beams is heavy enough to ensure that the automobile is heavy thus promoting the balance of the vehicle. Using steel to manufacture door beams also ensures that the users of the automobile have ample protection from the things that may hit the automobile from outside.
Strength of materials in mechanical engineering states that the materials used to manufacture any part of an automobile must be strong enough to ensure that they provide comfort and protection to the users. The strength of steel used to manufacture the door beams ensures that the users of the automobiles do not suffer injuries from external factors and that they feel comfortable while using the automobile. With the door hinges, steel allows the doors to roll and open swiftly to creating a user-friendly product. Commonly, some other metals expand when exposed to heat, which may hamper them from rolling over and closing if they form part of the door beams. In engineering, dynamics require that the materials used must adapt to the changing atmosphere easily and that they should not have incidental disadvantages to the users. Steel ensures that the door beams have proper dynamics for the users’ convenience.
Aluminum used in the manufacturing the door beams mainly functions to provide more dynamics to the vehicle. Aluminum as has a low expansion rate that explains the concept that prompts its utilization in the door hinges. In order to provide comfort to the users of the automobiles, the door beams have aluminum coat that provides a good surface attractive to the users. Manufacture of the door beams takes three distinct stages. The first stage is the core stage that involves assembly and stiffening of iron to a strong middle part of the door beam. The assembly stage includes sifting the iron to ensure that it contains no impurities that may cause expansion or any other inefficiency. During the assembly stage, the door beam undergoes compression to ensure that the highest possible weight for stability and statics.
In the second stage, stiffening and strengthening of the door beams occurs. It is in this stage that the door beams on different sides of the automobile balance and cross-weigh for easy stability. The preferred shapes of the door beams are established in this stage. Steel is the only material used in this stage. The last stage involves exclusive use of aluminum. The door beams are strengthened by coating them with aluminum. This ensures that they do not rust which increases the durability of the manufacture machine. The coating also aligns with the concept that steel does not expand which enhances machine’s stability especially in the hot seasons.
The other set of items used in the car industry include the airbags. The air bags are valuable components of the cars although most of the people overlook their importance in the cars. The main function of the airbags includes protecting the users. Notably, airbags fit in front of the car user at approximately the chest height. The positioning of the airbags is not incidental, as they target protecting the user from any chest injuries in case the vehicle gets an accident. Chest problems would cause instant deaths or fatal results hence the manufacturing and vehicle assembly takes care of such issues using the airbags.
Safety considerations entail the main principle informing the installation of airbags; however, the item also enhances operation of the car by enhancing the dynamics. For the users, they would like the vehicle to have a good shape. The airbags ensure that the vehicles have the best shapes as they are well molded to fit the shapes of the vehicles. The airbags facilitate statics in the vehicle because they are light (Jarrett 2009, p. 220). This ensures that most of the weight of the vehicle is in the metallic parts on the lower parts. The high weight on the lower parts, coupled by the lightness of the airbag helps to maintain the balance in the vehicles. The air bags are made from plastics, which are highly durable and strong. The parts that make the vehicle must have enough strength to sustain the use of the vehicles. The airbags come from strong plastic materials, which ensure that they remain in place unless intense pressure applies to the car.
The air bags are made of two main materials that include the rubber and plastic. Rubber ensures that the users of the vehicles are comfortable while plastic guarantees durability of the product. Manufacturing of the air bags occurs in three main stages. The first stage entails the plastic shaping and design. In this stage, the main work involves shaping plastic materials into the preferred size and shapes depending on the vehicle in assembly. The plastics are molded made and all air drained from the plastic bags at by the end of this stage. During the second stage, air at a very high pressure is pumped and trapped into the plastic bags. This high pressure ensures that in case of any eventuality, the air comes out at a pressure high enough to prevent movement of the user. During the last stage in the vehicle assembly, the manufacture considers the feeling and attitude of the user. Accordingly, rubber is coated around the plastic air bags. The rubber mainly makes the air bags have a good look as well as ensure a good shape of the interior parts in the cars (Jarrett 2009, p. 210).
In car assembly and engineering, three main areas of engineering guide the decisions of the manufacturers. These areas include the strength of materials, which ensures that the materials used have ample life and durability to serve for longer time hence maintain high quality. The other consideration includes dynamics, which mainly ensures that the parts move easily, integrate well, and appeal to the users. The last element includes statics, which mainly involve the equilibrium and balance of the machine. It is therefore apparent that these three areas form part of the scientific principles and methods that are essential and useful in the car industry.
Jarrett, J.E. 2009. "Statistical Principles and Techniques in Scientific and Social Investigations", Technometrics, 51(2). pp. 219-220.