Exam (elaborations)
CVEN 342 Final Review questions well answered(updated)
- Course
- Institution
CVEN 342 Final Review questions well answered(updated)
[Show more]
Content preview
CVEN 342 Final ReviewWhat are three different forms of failure? - correct answer ✔✔1) Creep (small, prolonged load)
2) Fracture (single, excessive load)
3) Fatigue (small, repeated load)
How does one measure toughness on a stress-strain curve? - correct answer ✔✔The toughness is equal
to the area underneath the curve.
What is a material called if it is sensitive to temperature? - correct answer ✔✔Thermoplastic
What is a material called if it is sensitive to strain rate as a function of time? - correct answer
✔✔Rheological
How is strain rate affected when temperature decreases? - correct answer ✔✔Strain rate increases.
How would you describe a material at low temperatures with fast loading times (elastic, viscous, or
viscoelastic)? - correct answer ✔✔Elastic
How would you describe a material at high temperatures with slow loading times (elastic, viscous, or
viscoelastic)? - correct answer ✔✔Viscous
How would you describe a material at intermediate temperatures with intermediate loading times
(elastic, viscous, or viscoelastic)? - correct answer ✔✔Viscoelastic
What are the primary mechanical models (3)? - correct answer ✔✔1) Spring (elastic)
2) Dashpot (viscous)
3) Slider (plastic)
, What are two simple tests to evaluate and model material behavior? - correct answer ✔✔1) Creep Test =
Response to Constant Load
2) Relaxation Test = Response to Constant Deformation
What are the types of non-Newtonian fluids (3)? - correct answer ✔✔1) Bingham
2) Shear Thinning
3) Shear Thickening
For reference, an example of a Newtonian fluid would be water (demonstrating a linear relationship).
What is the Maxwell Model? - correct answer ✔✔Dashpot and spring elements in series (same stress
acts on both elements). It is considered a viscoelastic model.
What is the Kelvin Model? - correct answer ✔✔Dashpot and spring elements in parallel (same strain acts
on both elements). It is considered a viscoelastic model (no relaxation test possible).
What is the Burgers Model? - correct answer ✔✔Combination of Maxwell and Kelvin model in series.
Define fracture. - correct answer ✔✔Fracture is the separation into multiple pieces.
- The crack typically initiates at a flaw point.
There are two types of fracture:
- The crack propagation is typically very fast with very little plastic deformation ahead of crack tip (brittle
= low fracture energy)
- The crack propagation occurs slowly with significant plastic deformation ahead of crack tip (stable =
ductile = high fracture energy)
Define fatigue. - correct answer ✔✔Fatigue is cyclic, repeated stresses NOT large enough to cause failure
in a single cycle.
- Failure tends to be sudden and without warning
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76710 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now