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  2. Toughness - Wikipedia

    en.wikipedia.org/wiki/Toughness

    Toughness is the strength with which the material opposes rupture. One definition of material toughness is the amount of energy per unit volume that a material can absorb before rupturing. This measure of toughness is different from that used for fracture toughness, which describes the capacity of materials to resist fracture. [2]

  3. Mental toughness - Wikipedia

    en.wikipedia.org/wiki/Mental_toughness

    Mental toughness is a measure of individual psychological resilience and confidence that may predict success in sport, education, and in the workplace. [1] The concept emerged in the context of sports training and sports psychology, as one of a set of attributes that allow a person to become a better athlete and able to cope with difficult training and difficult competitive situations and ...

  4. Fracture toughness - Wikipedia

    en.wikipedia.org/wiki/Fracture_toughness

    Fracture toughness tests are performed to quantify the resistance of a material to failure by cracking. Such tests result in either a single-valued measure of fracture toughness or in a resistance curve. Resistance curves are plots where fracture toughness parameters (K, J etc.) are plotted against parameters characterizing the propagation of ...

  5. Strength of materials - Wikipedia

    en.wikipedia.org/wiki/Strength_of_materials

    The strength of materials is determined using various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts. The methods employed to predict the response of a structure under loading and its susceptibility to various failure modes takes into account the properties of the materials such as its yield strength, ultimate strength, Young's modulus ...

  6. Stress–strain curve - Wikipedia

    en.wikipedia.org/wiki/Stress–strain_curve

    Toughness as defined by the area under the stress–strain curve. Materials that are both strong and ductile are classified as tough. Toughness is a material property defined as the area under the stress-strain curve. Toughness can be determined by integrating the stress-strain curve. [3]

  7. 'Who she is': Noem allies extol DHS boss as 'definition of ...

    www.aol.com/thats-she-noem-allies-rally...

    "Kristi Noem is the definition of South Dakota toughness and actually ran a working ranch for decades," Rep. Dusty Johnson, R-S.D., told Fox News Digital Tuesday. "She talks straight, works hard ...

  8. NYT ‘Connections’ Hints and Answers Today, Wednesday, February 19

    www.aol.com/nyt-connections-hints-answers-today...

    Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...

  9. Hardness - Wikipedia

    en.wikipedia.org/wiki/Hardness

    Hardness is dependent on ductility, elastic stiffness, plasticity, strain, strength, toughness, viscoelasticity, and viscosity. Common examples of hard matter are ceramics , concrete , certain metals , and superhard materials , which can be contrasted with soft matter .