Materials Il- Quizes 1-3

Front 1

1. Good and bad points of venture capital

Back 1

-Good: business expertise- venture capital financing for businesses provide valuable guidance and consultation.

-Bad: Loss of control

Front 2

1. What is Voluntary Consensus?

Back 2

-voluntary: compliance is not legally required except when specifically referenced in laws or local codes

-consensus: standards are written by a balanced group of producers, users, and interested parties

Front 3

1. What is the assembly side of a product?

Back 3

Your pieces:

-one half holds the components- the bucket

-one half is the top; where the screws are

Front 4

1. What defines basic ID?

Back 4

Space allocation

Front 5

1. What are two types of mechanical loads?

Back 5

-Tension & compression- stretching/ squishing

-Shearing- cutting/ twisting

Front 6

1. Who should you make sure to deal with when working with a client?

Back 6

The decision makers

Front 7

1. What does it mean to benchmark?

Back 7

Evaluate/ check your product by comparison with the standard

Front 8

1. Describe/ name 3 issues with sustainability

Back 8

- are you concerned about saving money

- are you concerned about prouct sustainability

- energy cost

- renewable resource sustainability

Front 9

1. Name one thing from the Ashby reading on how to reduce the “impact of use” of a product.

Back 9

- minimize material usage

Front 10

2. Describe forth point of contact of your part onthe primary datum plane of a GD&T orthogonal reference frame?

Back 10

- redundant

Front 11

2. Explain the technical concept modulus of elasticity

Back 11

-is a measure of the stiffness of a solid material. It defines the relationship between stress (force per unit area) and strain (proportional deformation) in a material. (slope=rise/run)

Front 12

2. The safety hierarchy- In order of decreasing preference

Back 12

1. Design so there is no hazard

2. Eliminate hazards through redesign

3. Provide guards/barriers against hazard

4. Provide automatic and manual warning systems(visual, audible)

5. Provide warning signs and labels

6. Proved warnings in manuals, writteninstructions, and training

7. User must wear protective gear, since hazard isunavoidable

Front 13

2. How do you protect you interest to avoid product liability fallout?

Back 13

Main thing #1: Protect your Interests

-document critical design decisions

-setup that your customer is responsible for final design approval

-get added to your customer’s product liability insurance as an “additional named insured”—permanently

Main thing #2: Do your Homework

-benchmark competitor products – learn how they did it and avoid their mistakes

-study patents: “background of the invention”

-study recalls

-make sure your design meets all relevant standards and has all relevant approvals

-do lots of testing—and document it

-conduct a formal risk analysis

Front 14

2. If it broke, what are the possible reasons?

Back 14

1. Under-designed for the application (failure in design research/ documentation, and failure to meet standards or in testing) (negligence: failure to do what a reasonable person would have)

2. Made from substandard materials

3. Manufactured incorrectly

4. Packed, shipped, or installed incorrectly

5. Used incorrectly

6. Maintained inadequately

Front 15

2. The law does NOT require products to be perfectly safe, just have a reasonable balance between----, -----, and -----.

Back 15

Utility, danger, and cost

Front 16

2. What is the policy of “no surprises”? of no “verbal’s”?

Back 16

Get all design changes, dates, deliverables, commitments and penalties in writing.

Front 17

2. Describe a reference dimension

Back 17

-Reference: a dimension that could only be calculated using other controlling dimensions- used only for clarity.

Front 18

3. What will lead to fatigue failure quickly

Back 18

stress oscillating to equal stress in other direction

Front 19

3. What is the common term used to describe sharp corners, holes, slots, threads, keyways, rough finishes, cracks, or rusty spots on a part?

Back 19

Stress raiser

Front 20

3. What is the purpose of a mandrel when bending metal tubing?

Back 20

a steel rod or linked ball inserted into the tube while it is being bent to give the tubing extra support to reduce wrinkling/creasing and breaking the tube during the bending process.

Front 21

3. Why would someone need a four-jaw chuck when doing metal machining in a lathe?

Back 21

to hold an object with radial symmetry

Front 22

3. In a Failure Modes Effect Analysis (FMEA), you quantify the relative risk of a failure mode effect by multiplying together rating values (from 1-10) of three different criteria. a)___ b)___ c)___

Back 22

Severity, Occurrence, Detection

Front 23

3. Which metal part creation method results in the best part toughness?

Back 23

deform to final shape

Front 24

3. Describe in detail what causes "springback" in solid-state metal forming.

Back 24

Springback is the elastic recovery of the sheet metal after bending; it is usuallymeasured as the difference between the final included angle of the bent part and the angle ofthe tooling used to make the bend, divided by the angle of the tooling.

Front 25

3. For a rectangular sheetmetal box we're making using a bending brake, if we change our design to a harder hardening material, we will need to decrease our ...

Back 25

Material thickness

Front 26

3. In green-sandcasting, which is the correct term for the shape that forms the cavity for the desired part's exterior shape?

Back 26

Pattern

Front 27

3. For the following regions of a stress-strain plot of a tensile test of a non-brittle material, determine the order you'd encounter these regions as your applied stress increases from zero.

Back 27

1. elastic deformation

2. yield strength

3. plastic deformation

4. ultimate strength

5. fracture