Give three examples of engineered products that must be circular in shape and explain why. Any ball is not allowed as an answer!
In: Mechanical Engineering
Identify and describe a commercial vision system capable of reading a Unique Device Identifier (UDI) code printed on the end of cans containing food products such as green beans. The cans travel down a conveyor at speeds of 600 cans/minutes. The vision system must identify any and all rogue cans, and send an appropriate signal to a device which will eject the can from the conveyor stream.
In: Mechanical Engineering
the device is hydraulic cranes
1- A creative and descriptive name for your device
2- A description of how your device will meet the main three functions which are aquire part, transulate part, placed part.
3- At least 10 customer requirements.
4- A correct functional model of your product.
5- Sketches of your concept and 5 other well developed concepts (mark which is your chosen concept)
In: Mechanical Engineering
Part II. Matching
Match each of the following terms with their most appropriate
description.
A. Target risk
B. Countervailing risk
C. Synergistic effect
1.The risk scenario which prompts the whole decision process,
often reflected by the main objective
2.The risk that arises from the action of managing the target
risk
3.Desirable consequence of managing risk other than reducing the
target risk
In: Mechanical Engineering
What two condition have to exist for Creep to occur?
In: Mechanical Engineering
name and describe structure what occur after hardening
In: Mechanical Engineering
Name and briefly describe the four types of chips that occur in metal cutting.
In: Mechanical Engineering
Biomaterials:
Fracture and fatigue are two types of mechanical failure that can occur in a material. What are the two (2) key differences between fracture and fatigue in terms of what leads to each type of failure?
In: Mechanical Engineering
What did SMED try to accomplish? When is SMED needed? What types of processes occur when you should apply SMED, and why? What was the foundation for SMED? SMED talks about two different types of times, what are they and what is to goal?
In: Mechanical Engineering
Hospital personnel routinely examine patient records for error, such as incomplete insurance information, on incomplete patient history, or missing/incomplete medical records. On average, about 270 new patients are admitted each day. Historically, about 8% of these records have contained errors. If a random sample of 40 new patient records is checked each day, what is the probability that this sample will contain at least two patient record with missing information?
In: Mechanical Engineering
A car accident expert is assigned to a case where the insurance company suspects the car company to use lower quality steel (lower TS) than the standards in their bumpers. The expert is given a post-crash bumper to run his test on. Since the bumper is completely deformed, he cannot place it into the normal bumper tensile tester. He is thinking about running a hardness test on the deformed bumper to estimate the TS of the steel to test the insurance company's theory. Do you think his method is acceptable? why?
In: Mechanical Engineering
Why have gas turbine engines almost completely replaced piston engines on new corporate-sized twin-engine aircraft?
In: Mechanical Engineering
Choose one of the following topics and write a report with a minimum of 8 pages and 4 references.
Topics:
1.History of the Gas Turbine engine development from 1900 until the present.
2.The history of reciprocating aircraft engine technology from 1900 until the present.
3.Which modern automotive technology could improve aircraft reciprocating engines and the problems associated with incorporating the technology into aviation.
4.Current and historical aircraft Diesel engines – pros, cons and current usage.
5.Current research on lead-free alternatives to 100LL gasoline in aircraft engines.
In: Mechanical Engineering
A parabolic trough concentrator with width of 3 m and length of 25 m has an absorbed solar radiation per unit area of aperture (S) of 600 W/m2. The receiver is a cylinder with an emittance of 0.3 and is surrounded by an evaluated glass cylindrical envelope. The absorber has a diameter of 50 mm and the transparent envelope has an outer diameter of 100 mm with a thickness of 5 mm. The collector is designed to heat a fluid entering the absorber at 100oC at a flow rate of 0.0425 kg/s. The fluid has a specific heat of 3.89 kJ/kg K. The heat transfer co-efficient inside the tube is 250 W/m2 K and the overall loss co- efficient of 5 W/m2 K. The tube is made up of stainless steel with a thermal conductivity 1 of 15 W/m K and a wall thickness of 4 mm. Assume that the product of τcovαabs for the parabolic receiver is τcovαabs ~ 1.0 and the ambient temperature is 20oC. Determine the following: (a) the useful heat gain from the collector; (b) PTC collector efficiency; (c) the exit heat transfer fluid temperature; (d) the mass flow of the heat transfer fluid to achieve the same exit temperature (calculated in c) for the parabolic trough collector with a F_R value of 0.70.
In: Mechanical Engineering
A container is occupied by a ten kg waterr and four kg vapor at 0.88 Mpa.
In: Mechanical Engineering