Strength Of Materials

Question 1

STUDY OF THE INTERNAL EFFECTS OF
EXTERNAL FORCES APPLIED TO A BODY

Answer 1

Strength of materials

Question 2

MEASUREMENT OF THE AMOUNT OF FORCE
HELD WITHIN AN BOJECT

Answer 2

Stress

Question 3

INTERNAL RESPONSE OF AN OBJECT TO AN
EXTERNAL PRESSURE
RESISTING FORCE PER UNIT AREA

Answer 3

Stress

Question 4

unit of Pressure, Stress,& Strength

Answer 4

Pascal

Question 5

FORCES
ALONG
THE
LONGITUDINAL AXIS (OR LENGTH)
OF THE MATERIAL

Answer 5

Axial force

Question 6

STRESS DEVELOPED TO RESIST
AXIAL FORCE

Answer 6

Axial stress

Question 7

SHORTENING OR
PUSHING TOGETHER

Answer 7

Compression

Question 8

STRETCHING OR PUSHING
APART

Answer 8

Tension

Question 9

FORCES PERPENDICULAR TO
THE LONGITUDINAL AXIS OF A
MEMBER

Answer 9

Transverse force

Question 10

STRESS
ACTING
PERPENDICULAR TO THE
AREA OF CONTACT

Answer 10

Normal stress

Question 11

STRESS
ACTING
PARALLEL TO THE AREA

Answer 11

Shear stress

Question 12

FORCES PERPENDICULAR TO
AN AREA, IN OPPOSITION TO A
FORCE ACTING IN THE OPPOSITE
DIRECTION

Answer 12

Shear force

Question 13

FORCES PRODUCING BOTH TENSION AND
COMPRESSION ON THE CROSS-SECTION OF THE
BODY

Answer 13

Bending stress

Question 14

A SHEAR STRESS PRODUCED WHEN A TWIST

Answer 14

Torsional stress

Question 15

DEFORMATION OF A BODY DUE TO STRESSCANNOT EXIST WITHOUT STRESS
• HAS NO UNIT

Answer 15

Strain

Question 16

STRAIGHT LINE FROM
ORIGIN
LIMIT WHEREIN STRESS
IS STILL PROPORTIONAL TO
STRAIN

Answer 16

Proportional limit(hooke’s law)

Question 17

PROPORTIONALITY
CONSTANT
BETWEEN
STRESS AND STRAIN
THE SLOPE OF THE LINE
FROM
ORIGIN
TO
PROPORTIONAL LIMIT

Answer 17

Modulus of elasticity (young’s modulus)

Question 18

LIMIT BEYOND WHICH
THE MATERIAL WILL NO
LONGER GO BACK TO ITS
ORIGINAL SHAPE WHEN
THE LOAD IS REMOVED

Answer 18

Elastic limit

Question 19

RANGE WHEREIN THE
SHAPE IS RECOVERABLE
AND DEFORMATION IS
REVERSIBLE
ORIGIN UP TO ELASTIC
LIMIT

Answer 19

Elastic range

Question 20

ABILITY
OF
A
MATERIAL TO ABSORB
ENERGY
WITHOUT
CREATING A PERMANENT
DISTORTION
AREA
UNDER
THE
STRESS-STRAIN
CURVE
FROM ‘O’ TO ‘E

Answer 20

Elastic of resilience

Question 21

RANGE WHEREIN THE
DEFORMATION
IS
PERMANENT
BEYOND ELASTIC LIMIT

Answer 21

Plastic range

Question 22

POINT AT WHICH THE
MATERIAL
WILL
HAVE
ELONGATION
WITHOUT
ANY INCREASE IN LOAD

Answer 22

Yield point

Question 23

THE MAXIMUM STRESS
THAT CAN BE SUSTAINED
BY THE MATERIAL

Answer 23

Ultimate strength (tensile strength)

Question 24

THE STRENGTH OF THE
MATERIAL AT FAILURE

Answer 24

Rapture strength (breaking strength)

Question 25

ABILITY
OF
A
MATERIAL TO ABSORB
ENERGY
WITHOUT
CAUSING IT TO BREAK
ENTIRE AREA UNDER
THE STRESS-STRAIN CURVE
FROM ‘O’ TO ‘R

Answer 25

Modulus of toughness

Question 26

ABILITY OF A DEFORMED BODY TO RETURN TO
ITS ORIGINAL SHAPE AND SIZE WHEN THE LOAD IS
REMOVED

Answer 26

Elasticity

Question 27

ABILITY OF A BODY TO
WITHSTAND TENSILE STRESS

Answer 27

Ductility

Question 28

ABILITY OF A BODY TO
WITHSTAND COMPRESSIVE
STRESS

Answer 28

Malleability

Question 29

ABILITY OF A BODY TO
ABSORB ENERGY WITHOUT
BREAKING

Answer 29

Toughness

Question 30

RATIO OF THE CHANGE IN
WIDTH TO THE CHANGE IN
LENGTH AS A RESULT OF
STRAIN
HOW
MUCH
THE
MATERIAL WILL DEFORM IN
THE LATERAL DIRECTION WHEN
STRESS IS APPLIED IN THE
LONGITUDINAL DIRECTION

Answer 30

Poissons ratio

Question 31

THE CHANGE IN STRAIN OF MATERIAL WITH
RESPECT TO TIME

Answer 31

Strain rate

Question 32

TEMPORARY CHANGE IN
THE SHAPE OF A
BODY,
PRODUCED BY A STRESS LESS
THAN THE ELASTIC LIMIT OF THE
MATERIAL

Answer 32

Elastic deformation

Question 33

INELASTIC STRAIN IN A MATERIAL

Answer 33

Permanent set

Question 34

FAILURE CAUSED BY FLUCTUATING OR REPEATED
STRESS
LEADS TO FRACTURE (PROGRESSIVE MINUTE CRACKS
THAT GROW UNDER REPEATED STRESS)

Answer 34

Fatigue

Question 35

TIME-DEPENDENT, GRADUAL
PERMANENT
DEFORMATION
PRODUCED BY CONTINUOUS
APPLICATION OF LOADS
CONSIDERED
TOGETHER
WITH TEMPERATURE

Answer 35

Creep

Question 36

TIME-DEPENDENT DECREASE IN STRESS UNDER
A CONSTANT STRAIN

Answer 36

Stresa relaxation