Old Flexible Structures Final

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/8

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

9 Terms

1
New cards

Q1: Explain chain saw protective clothing how it works and the fabric structure (Chapter 16 Slide 12)

  • Loosely woven or knit fabrics

  • Yarns in the fabric “shred out” in less than 0.15s and jam the drive sprocket of the chainsaw and bring it to a dead stop

  • 6 layers of aramid woven and needle punched fabric

2
New cards

Q2: Calculate the arrestance given

3
New cards

Q3: How do seat belts and air bags work together to reduce risk of injury in a major car accident, explain the timing (Chapter 17)

  • Seat belts are made to prevent the movement of the wearer in a controlled manner during a sudden deceleration of a vehicle

  • Crash sensors deploy the airbag which fully inflates within around 55 milliseconds to cushion the already slowed occupants head and chest

  • Together, the seat belt and airbag reduce the peak forces and prevent impact of the occupant with the hard interior surface of the vehicle

4
New cards

Q4: Draw tufted carpet structure and explain the function of each component (Chapter 7)

Includes these components:

  • Surface yarns

    • Nylon, polyester

  • Primary Backing

    • Usually woven

    • Split film polypropylene yarns

  • Coating

    • Latex

  • Secondary Backing

    • Either spun jute or fibrillated polypropylene yarns

<p>Includes these components:</p><ul><li><p>Surface yarns</p><ul><li><p>Nylon, polyester</p></li></ul></li><li><p>Primary Backing</p><ul><li><p>Usually woven</p></li><li><p>Split film polypropylene yarns</p></li></ul></li><li><p>Coating</p><ul><li><p>Latex</p></li></ul></li><li><p>Secondary Backing</p><ul><li><p>Either spun jute or fibrillated polypropylene yarns</p></li></ul></li></ul><p></p>
5
New cards

Q5: Given a schematic of 3 fabrics and geotextiles and their corresponding flow rate, pick the best fabric for erosion control (Answer is none of them apparently) (Formulas in Chapter 11)

6
New cards

Q6: Draw a schematic of your choice of 3 layers of a filling (weft) profile for paper making. Label it

<p></p>
7
New cards

Q7: Calculate the ballistic limit of a vest given the number of material layers, a mass value, and a value with units of grams*mass/seconds

8
New cards

Q8: Draw a schematic of a hollow dialyzer, give the number of fibers in it, the fiber dimensions, and explain the overall dialysis process

  • High efficient

  • Hollow fibers

  • Blood flows inside of the fibers

  • Dialysate flows outside of the fibers

  • Cleaned blood exits and the used dialysate is discarded

<ul><li><p>High efficient</p></li><li><p>Hollow fibers</p></li><li><p>Blood flows inside of the fibers</p></li><li><p>Dialysate flows outside of the fibers</p></li><li><p>Cleaned blood exits and the used dialysate is discarded</p></li></ul><p></p>
9
New cards

Q9: Calculate the strength for each yarn given warp and weft counts per cm, the safety factor, and the applied force in units of N/cm