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When the optimum temperature of a die has been determined, it should be maintained within a range of ±6°C. In the case of casting Aluminum alloys, the temperature range should be 220 to 315°C. A computer system is used to control the die temperatures so as to produce the required section's thickness.
Comparing with the ideal VCRC, the data attained and computed from the laboratory slightly differ from the existing typical cycle (Whitman, Johnson & Tomczyk, 2005, pp.123-189). The differences are due to the assumptions made when undertaking the ideal cycle operations in the simplification of the computations.
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The characteristics of steel are mainly determined by its chemical composition, manufacturing method, and heat treatment. But, there are some physical properties that also influence the behavior of steel; such as Young’s Modulus of elasticity, ultimate strength and yield strength, and percentage elongation.
Young's modulus determines the resistance of a particular material to elastic deformation under load. Moreover, stiff metal has a high Young's modulus and changes its shape only slightly under the condition of elastic loads. In addition, materials like rubbers under young’s modulus have high flexibility because it changes its shape considerably.
While vibrations may not be a cause of concern in many cases, they pose a heavy threat to the machinery and equipment if not properly monitored and controlled. Some vibrations like those experienced during an earthquake can prove fatal, while normal vibrations need checking if they go beyond the desired limits.
Figure 5 represents the scenario with the input frequency greater value as compared to the resonant frequency. Since the input frequency is high, then the circuit is effectively capacitive in nature. When the input frequency is increased beyond the resonant frequency, then a point where XL – XC = RL is achieved, RL is the output resistor; this leads to voltage gain drop.
The soil strength depends on whether its deformation exists in fully drained conditions or undrained conditions, and that is constant volume or with the intermediate drainage state. For each case, there are different extra pore pressures that occur resulting in varied effective stresses, hence varied strengths.
The problem was not captured because the design re-evaluation process was ineffective. Initially, the structural engineer had sent a draft of a planned walkway design to the fabricator with the supposition that the latter would work out the fine points of the design. However, the fabricator supposed that the sketch was the finalized drawing.
Plug the mains cable into the power source and switch it on. This immediately powers up the machine. An input value is expected. The user is required to enter a value in seconds of the time the timer should run before it triggers an alarm (DARR, 2004). Switch it off in case it is not in use to conserve power.
The make-up water flow increases faster in the measured values when compared to the calculated values. The higher cooling loads result in high make-up water flows when compared to lower cooling loads. From graphs 7 and 8, set up E experienced the highest make-up water flow rate while setting up A and B had the least;
Generally, an oscillator can be defined as an oscillator circuit that generates oscillating electronic signals, periodic signals,s or at times square waveforms, or sine waveforms. They convert direct current from the source to AC signals (alternating current) any electronic devices are used for this purpose.
The depression or the dome in the piston head is spot faced to the required volume of 13.3788 cubic millimeters. Spot facing is the machining process whereby materials are removed from certain regions especially in forged or cast work. The reaming process is used to enlarge the pinhole to the required dimension.
The Concorde Air Crash is an example of an engineering disaster due to simple mistakes made by the engineers. This is because of the failure to tighten a loose strip that had disturbed the crew on previous occasions. As a result, the strip deflated the Concorde Flight’s tires on the runway, causing the accident.
The longitudinal direction’s tensile strength tends to be larger as compared to the compressive strength when they act in the same direction. In addition, it was realized that the longitudinal tensile strength is almost 40 times greater than the acting tensile strength in either the tangential or radial directions (American Society of Civil Engineers & United States, 1942).
A standard relief valve for industrial application is made of an area of 4.34 square inches as the smallest standard size to flow the required relieving capacity (Whitesides 9). A pilot application valve can also be selected for industrial applications since its performance is not affected by back pressure.
KSA’s construction industry is compared with the rest of the GCC countries to identify which country has the most potential to grow. This comparison also provided information regarding the construction cost in KSA and the rest of the GCC countries along with the level of profits earned by these countries.
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From the analyzed research data, it is seen that most of the respondents either strongly agreed with the research statement: “the use of prefabricated cables threatens of jobs of electricians”. Eighty-seven percent (87%) of the electricians and contractors interviewed strongly agreed with research question 3 (hypothesis 3).
Annually, several parts of the world are inflicted with natural disasters of one type or the other. Earthquakes are reported from several regions, and they may range from mild tremors to devastating seismic upheavals of high magnitude, causing immense damage to life, the natural surroundings, the built environment, and infrastructure.
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Extensive research has been undertaken by a number of groups, regarding the use of smart home appliances for the support of handicapped and elderly people. In Germany, the University of Erlangen-Nuremberg [5] investigated the challenges faced during the design of smart homes, especially those supporting handicapped and elderly people.
The research indicated many positive and negative outcomes and implications for the construction industry, including liability reduction, the establishment of new evaluation and control systems, and also the positive engagement of business-to-business stakeholders and organizations sharing common ethical and moral values.
There are various types of multimeters that come in various types and all serve varying functions. The choice of the type of multimeter to purchase solely depends on the user’s budget and intended purpose. This user guide aims at guiding users about how to choose the most suitable multimeter as well as how to use the meter safely and effectively.
Presence of a threshold for members with relevant degrees and discourse expertise. In the study groups as well as in planning and coming up with the systems, there are efforts towards logical thinking in solving any engineering problem, which may sometimes be similar or different, but has to be understood by all in the profession.
Another requirement as set by ISO 9001: 2008 is business conformity to customers’ requirements (International Standard, 2008 p18). This requirement means that businesses focus on conforming to the needs of the customers, as opposed to producing products and services that are convenient and profitable to the business.
The employees who would detest a change of any kind would do so because they would be of the view that their already set norms and routines are going to be affected drastically. Thus they would protest against organizational change at all times. They would hinder the processes and actions that go into making this change possible.
Nowadays in almost all low current industrial applications, DC voltage is applied either by increasing or decreasing its values as per requirements. To achieve the desired DC voltage level DC/DC converters are used that can convert a fixed input DC voltage from a DC source to either fixed or variable output DC voltage.
It is now a widespread fact that is very easy to hack and break the password and security codes of iPhone 5 gadgets. This realization became apparent to the public when one of the Spanish who use the iPhone 5 and who posted videos demonstrating the procedures that one can follow to hack and break the password of a typical iPhone 5 gadget.
Anchoring and mooring system is used for station keeping of any floating platform like ships, floating production systems, and offshore drilling units at all water depths. The system generally consists of an anchor, connectors, and a mooring line. An anchor on the seafloor is connected to a floating platform or structure by the mooring line.
The investigators should also conduct adequate analysis and investigation of the site on which the construction is to be carried out. This is the job of the designers in conjunction with the consultants hired for the job. They should use their technical knowledge to analyze and present the needs of their clients (Farmer, 1984).
From the analysis point of view, the initiation of the collapse on the I-35W Bridge was a result of the lateral shifting of the upper diagonal members and the subsequent failure of the gussets in the center nodes of the deck truss. The total collapse of the deck truss was achieved immediately after the gussets failed to support the joints.
Depreciation takes into account the decrease in service potential of infrastructure capital assets invested in a venture, resulting from acts such as physical wear and tear in use, deterioration through natural elements, or obsolescence as a result of technological changes. As a matter of factor, it is useful in the reflection of the loss in value.
Depreciation takes into account the decrease in service potential of infrastructure capital assets invested in a venture, resulting from acts such as physical wear and tear in use, deterioration through natural elements, or obsolescence as a result of technological changes. As a matter of factor, it is useful in the reflection of the loss in value.
The arbitrator is competent to decide matters relating to Article 5 objection. Besides, the Arbitrator can decide on the question of whether the Architect’s instruction is in order, whether or not a certificate has been unreasonably withheld or not issued as per the Conditions among others. The Venue of Arbitration shall be Hong Kong.
Carbon Fiber reinforced polymers require detailed processing which consumes time and is also very costly. Some automotive manufacturers like Ferrari prefer the use of Aluminium to Carbon fiber reinforced Polymers (CFRP). Ferrari maintains that far from CFRP strength and weight, it proves difficult to use in automated production.
Friction weld in carbon steel was preceded by making one end of the one part in contact with the face of the other and in contact phase of friction and fusion to give up a single piece(Duffin and Bahrani, 1973, Kumar et al., 2012). All the images below show that this type of weld results in excess material left over without welding.
The main aim of a manufacturing business is to maximize its profit margin while at the same time minimize its operating costs. This can only be achieved if the manufacturer operates in an efficient manner. That is, keeps his inventory and work in progress to a minimal level, completes its job in a timely manner, and maintains high-quality products.
Radar is used to detect an object that specifically uses radio waves. It is, therefore, used to determine or measure certain parameters like speed, altitude, as well as the range of objects. Objects such as missiles, weather formations, ships, vehicles, and aircraft among others, are some examples of such objects that are radar is used to detect.
ECL uses much power. Each gate draws current continuously. Close to RTL is Transistor-transistor Logic, TTL. Its transistor conducts both functions of amplification and logic gating. However, it is power intensive especially at a slow speed (Jablonski, 67). TTL is an important foundation for many electronic devices.
Whilst the 1974 Health and Safety at Work legislation has been a well-respected framework for health and safety at organizations for nearly four decades, the frequency of incidents occurring at Silverfield mandate an investigation into why non-compliance to this Act and other legislations appears to be ongoing at the firm.
The process of arbitration is private, formal and binding, where a decision will be made by a chosen 3rd party who is the arbitrator. In the situation with CC Development Ltd. and DD Ltd, the resolution can be done through arbitration with the two parties agreeing to involve a 3rd party to resolve their issues.
Air/gas-based drilling mechanism is most commonly implemented in onshore and offshore oil and gas rigs(Midland, 2013). Research shows that gas-based underbalanced drilling provides better pressure stability at the good bore by decreasing the density of drilling fluid and hence, providing the least damage to the formation.
Carbon fiber composites are one of the most commonly used materials in vehicles. Carbon fiber is normally used in high-performance applications. The carbon fiber can be made from polyacrylonitrile fiber (PAN). The main advantage of most of the composite materials is that it saves weight (Chung, 1994).
While discussing the fluid dynamics, Bernoulli explained that the speed of a non conducting fluid increases as the decrease in pressure or decrease in its potential energy occurs. The principle was first published in the denial Bernoulli book “Hydrodynamica” which was published in 1738. The theory is named after the scientist.
Am Hilal Addulnasser Al-Hilal, the bearer of registration number 708457, a foundation student at Liverpool John Moores University (LJMU), majoring in Bachelor of Art Civil Engineering (BA Civil Engineering). I am a sponsored student sponsored by KAHRAMAA (KM, Qatar General Electricity & Water Corporation).
There are policies and regulations that various governments have put in place that one needs to comply with before and after the transaction process. There are some levies that an individual need to pay in the process of procurement in order to meet economic, social, and environmental sustainability and avoid penalties from the authorities.
On 24th December 2009, 4 workers died after a swing-stage scaffold on which they were on the split. The 4 workers fell from the 13th story. Two of the workers on the scaffold had safety lines and did not die after the accident. Joel Swartz, the president of Metron Construction, and the company were charged for causing bodily injuries and death.
In Hong Kong solar energy is progressing at a rapid pace due to the high abundance of the resource and due to the economical benefits as well as environmental benefits. In general, Hong Kong is comprised of the elevated and sky-high buildings that restricts the proper solar energy in particularly dense urban regions.
There are different types of demolition, building implosion, dismantling, and selective demolition. Building implosion requires the use of explosive materials that are in specific locations and the right type of explosives. In addition, implosion occurs inwardly and violently bringing down the building with a great impact.
The case for Alghazer Company provided validation evidence for the importance of EMS in the manufacturing process. The recycling project resulted from a lean process concerning the solid waste disposal process and led to the recycling of a significant amount of material previously disposed of as waste.
Electric cars have undergone significant modifications since inception. Unfortunately, electric cars are not without negative environmental impacts. These negative environmental impacts coupled with other economic determinants are the main reasons why there are different views and controversies surrounding the topic of electric cars today.
The number of phases used in the process of producing pipeline-quality natural gas primarily depends upon the gas source and makeup of the wellhead creation stream. In some cases, the phases may be incorporated into one operation unit, carried out in a different sequence or at different plant locations, or not may totally not be required.