UNIVERSAL TESTING MACHINE

Question 1

To test mechanical properties of a material such
as compressive, tensile, shear and flexural must use this
machine

Answer 1

UNIVERSAL TESTING MACHINE

Question 2

This
testing machine can make a stress strain diagram that
we used to compute yield strength, tensile strength, and
others.

Answer 2

UNIVERSAL TESTING MACHINE

Question 3

Components of Universal Testing Machine
Two main parts of UTM:

Answer 3

LOADING UNIT
CONTROL UNIT

Question 4

Where the test specimen takes place and
the load that must be exerted to the
material.

Answer 4

LOADING UNIT

Question 5

COMPONENTS OF LOADING UNIT

Answer 5

LOAD FRAME
UPPER/LOWER CROSSHEAD
ELONGATION SCALE

Question 6

– It consists of a table (to place the
specimen for compression test), upper
crosshead, and lower crosshead.

Answer 6

LOAD FRAME

Question 7

is
to clamp the specimen needs to be tested from
top or its one end;

Answer 7

UPPER CROSSHEAD

Question 8

is the
movable crosshead whose screws can be
loosened for height adjustment and tightened.

Answer 8

LOWER CROSSHEAD

Question 9

The relative movement of
the lower and upper table is measured by an
elongation scale which is provided along with
the loading unit.

Answer 9

ELONGATION SCALE

Question 10

Where the load is applied and get the
corresponding test result. The load is
applied with control valve and released by
release valve. The load is applied with the
help of hydraulic pressure.

Answer 10

CONTROL UNIT

Question 11

COMPONENTS OF CONTROL UNIT

Answer 11

HYDRAULIC POWER UNIT
LOAD MEASURING UNIT
CONTROL DEVICES

Question 12

This unit consists of an
oil pump that provide non-pulsating oil flow into
the main cylinder of the load unit. This flow
helps in the smooth application of load on the
specimen. The oil pump in a hydraulic power
unit is run by an electric motor and sump.

Answer 12

HYDRAULIC POWER UNIT

Question 13

This unit has a
pendulum dynamometer unit that has a small
cylinder with a piston which moves with the
non-pulsating oil flow. The pendulum is
connected to the piston by pivot lever. The pivot
deflects based on the load applied to the
specimen. This deflection is converted to the
load pointer and displays as the load on the dial.
The range of load application can be adjusted by
means of a knob in the load measuring unit (0-
100 kN; 0-250 kN; 0-500 kN and 0-1000kN).
The accuracy of measuring unit controls the
overall accuracy of the machine.

Answer 13

LOAD MEASURING UNIT

Question 14

It can be electric or
hydraulic. Electric control devices make use of
switches to move the crossheads and switch
on/off the unit. A hydraulic control device
consists of two valves, Right Control Valve and
Left Control Valve or Release Valve. A right
control valve is used to apply load on the
specimen. The left control valve is used to
release the load application.

Answer 14

CONTROL DEVICES

Question 15

Functions of Universal Testing Machine

Answer 15

test the mechanical properties of materials is
the main function of UTM.

Question 16

STANDARD TESTS PERFORMED BY UTM

Answer 16

TENSILE TEST
COMPRESSION TEST
BENDING STRESS
PEEL TEST

Question 17

Determine the force needed to
pull the specimen apart and along with how much the
material stretches before it breaks

Answer 17

TENSILE TEST

Question 18

– This is opposite of
tensile test where you compress an object between two
level plates until a certain load or distance has been
reached or the product breaks. The compressive
strength of a material is calculated as the stress
required to rupture the specimen or deform the
specimen to a given percentage of its height.

Answer 18

COMPRESSION TEST

Question 19

This is where you support a
length of material by spanning it across two supports on
each end. There is nothing supporting the middle portion
underneath of it. Then you press down from above
directly in the middle of the span of material until the
supported material breaks or reaches a specific
distance. This test measures how strong the material in
flexure (flexural strength) and how stiff it is (flexural
modulus).

Answer 19

BENDING STRESS

Question 20

This test pulls apart two materials
that have been bonded together.

Answer 20

PEEL TEST