Logo
Home Study Material Contact Search
AI Chat FREE
  1. engineering
  2. mechanical engineering
  3. why are materials whose yield stresses are ighly s

Why are materials whose yield stresses are ighly strain rate dependent more susceptible to brittle fracture...

Free

70.2K

Verified Solution

Question

Mechanical Engineering

Why are materials whose yield stresses are ighly strain ratedependent more susceptible to brittle fracture than those materialswhose yield stresses do not exhibit marked starin rate dependce

Answer & Explanation Solved by verified expert
4.3 Ratings (628 Votes)

A higher strain rate would correspond to a shorter loading time, equivalent to lower temperatures causing the ductile-to-brittle transition of the specimen. This ductile-to-brittle transition may be due to the significant influence of strain rate effect. With strain rate and multiaxiality increasing, the local stress peaks become so high that
they can reach the microscopic cleavage fracture strength oj of the material. Brittle
fracture is expected, when the local value of the maximum principal stress exceeds aJ
over a characteristic distance X, which depends on the microstructure of the material.
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Consider an ONLINE_AUCTION database system in which members (buyers and sellers) participate in the sale of...

Programming
Q

2. Let X ~ Pois (?) ? > 0 a. Show explicitly that this family is...

Basic Math
Q

Darringer Products manufactures recreational equipment. One of the company’s products, a skateboard, sells for $32. The skateboards...

Accounting
Q

4 3 2 Y 4r Y 9 A cube of side 40 mm has its...

Physics
Q

Subtract 3x x 2y from 6 x 2 xy and express your answer as a...

Algebra
Q

Which of the following is correct concerning system and organization controls (SOC)...

Accounting
Q

Jake's Roof Repair provided the following data concerning its costs: For example,...

Accounting
Q

Return on Investment, Margin, Turnover Data follow...

Accounting
Q

Brief Exercise A-4 Bates Company issued $800,000, 9-year bonds and agreed to make annual sinking...

Accounting
Q

Jackson County Senior Services is a nonprofit organization devoted to providing essential services to seniors...

Accounting
Q

The National investment Authority has announced an investment project for the generation and distribution of...

Accounting
Q

the risk to the contractor in a PBP arrangement include

Finance