Firearms and Tool Mark Unit December 2023

Q4: Answer the following: a. What are the uses of Liquid Penetrant Test? b. List the uses and limitations of magnetic particle inspection. c. Sketch a result of MP testing for a defected component. d. Describe briefly principles, uses and applications of UT. e. Explain the uses of visual inspection. f. List four equipment used in visual inspection testing and give one equipment sketch.

Materials

Non destructive testing 1. Give your analysis on how NDT can be use in the current industry. 2. Rank all kinds of NDT from the most expensive to the cheapest. 3. What is the most used NDT process in the industry? check the image below for guide.

Radiation testing in automotive

Materials testing used to detect surface flaws and flaws close to the surface * O Dye penetrant inspection Magnetic particle inspection O Ultrasonic testing O Eddy current testing

Question 2 1. What is a First Article Inspection and why it is needed? Explain briefly (with the help of the following drawing)the steps that you take to prepare FAI in terms of design, manufacturing, and inspection of any part First Article Inspection Requirements RAW MATERIAL DRAWINGS, STANDARDS, SPEC SHEETS SPECIAL PROCESSING REQUIREMENTS TEST SPECIFICATIONS PROCEDURES SPECIAL PROCESSES (ANODIZATION, CLEANING ETC,). RAW CONVERSION FUNCTIONAL MATERIALS PROCESSES (MACHINING, CASTING ETC.) TESTING (AL6061 T6, 301SST etc.) CERTIFICATE OF CONFORMANCE TEST CERTIFICATE OF CONFORMANCE DIMENSIONAL MEASUREMENTS RESULTS MANUFACTURING ENGINEERING

Functional testing check sheet for Lithotripsy machine, self-illuminating microscope and Holmium laser.

b)Without opening or removing from the package, you are required to describe the techniques used to check the internal condition of a device.

Answer the following question: 1. What are the the things that needs to be checked when performing an on-aircraft inspection?

True or False? Common way of classifying mechanical device is by function.  The goal during the design process is to learn as much about the evolving product as early as possible in the design process because during the early phases changes are least expensive.

What are the type of aircraft propeller shop inspection? Define each

"Vehicle 1. Explain how each of these safety features is designed to protect you. a. anti-lock braking systems b. crumple zones c. side-impact beams d. seat belts 2. How many times more likely are people who don't wear seat belts to be injured than people who do wear seat belts? 3. Study Figure 13.10. What is the relationship between seat belt use and occupant fatalities? 4. Name three items you should regularly maintain on your vehicle to ensure your safety. CHECK Check your answers on pages 101 and 102 of the Appendix. Science 24 Module 4 • Section

Subject : engineering design - DFMA

A mirror and a quality light for leak testing may be used in lubrication repair. Select one: True False

From the following identify the false statement . A) In electrical safety precaution, necessary steps should be taken to avoid overloading of electrical circuits. B) In housekeeping safety precaution, the machine should be cleared with tools before starting the operation. C) In general safety precaution, the operator should be familiar with the emergency stop button on the machines. E) In general safety precaution, the machine tool should be cleared with metal chips after the machining process.

Solve it with little explanation

1. What type of measurements are most often obtained when testing vehicle circuits ? 2. What measurement is common in testing audio system and many modern door lock system ?

Place a check on the space corresponding to the observed physical properties. Metal brittle malleable ductile hard lustrous Mg           Al           Fe           Sn           Pb           Cu

In a good material handling system timely movement of materials is possible. Select one: True False

Course: Metrology Distinguish between “interference fit” and “Clearance fit”.

True/False 1. ____ Metals have long and thin bubbles in Strength-Modulus Chart because the processes used to manipulate their properties have almost no effect on the modulus but have a dramatic effect on strength. 2. ____ Cross-linking, blending and filling of polymers with particulates or fibers do not change their modulus or strength. 3. ____ The strength of ceramics depends on porosity, generally the higher the porosity, the higher the strength. 4. ____ Three basic ways to manipulate the mechanical properties of metals are: solution hardening, precipitation hardening, and work hardening. 5. ____ Foaming reduces density of metals, ceramics, and polymers but does not affect modulus. Your answer

Design a complete and safe experiment to find out how increasing the distance of air that alpha particles must pass through affects their detection by a Geiger Muller tube. G-M In your plan you must include: A hypothesis that can be tested Am-041 . An identification of the independent, dependent, and two control variables A list of any additional equipment needed A justification of why additional equipment is needed A description of your method, How you will collect sufficient data A relevant safety consideration

True or False 1. It is acceptable to use a hoist to lift something that weighs more than the rating on the hoist when the load is lifted carefully. 2. Typically, combustible material accidents occur at higher temperatures while flammable material accidents occur at room temperature. 3. Water reactive chemicals include calcium carbide, cyclooctene, metal hydrides, and metals like sodium and potassium. 4. When driving material lifting equipment, workers should maintain at least a 5-foot clearance from overhead power lines. 5. Workers should use at least 2 straps placed equally from the center when lifting a long I-beam. ******************************************************************************************** Multiple Choice 1. Which of the following chemicals is not considered a liver toxin? A. Glacial acetic acid B. Carbon Tetrachloride C. Ethanol D. Trichloroethylene 2. Which of the following is a safety practice intended to protect workers from a lightning strike? A. Use a metal…

The insulation ability of an insulator with the presence of moisture would  Increase Decrease Remain unaffected May increase/ decrease depending on temperature and thickness of insulation

The possibility for accidental mechanical damage in the automotive shop is

What process is used to verify that a manufactured part or hardware component conforms/follows the intent of the design and customer specification? HINT: The answer is one word - not an acronym.

1. Choose the example of good vibration * Guitar Seismic Bullet Train Physiotherapy tools 2. Choose the example of bad vibration * Guitar Seismic Bullet Train Physiotherapy tools

is a measure of internal resistance caused by electrical environment of the particles. a. Effective viscosity b. Apparent viscosity c. Plastic viscosity d. Yield point e. Both a and b