TESTING AND EVALUATION OF AG MACHINES Flashcards
It is the focus of testing.
Performance of the machine parts itself, like speed, forces,
functional capacity, power requirement,
It is also done to verify the machine
specification before it is finally adopted for use.
Testing of Agricultural Machines
During the design stage, prototype development, manufacturing stage, as well as the
experiences of users
At the stage development
Test carried out to determine whether the
claims of the manufacturer/supplier of the machine conform
with the actual data and test results. I is also done for
verification of specifications.
Verification Test
Test conducted to determine the machine
to be supplied is acceptable for use by clients/beneficiaries
based on the performance standard.
Acceptance Test
Test carried out on each and every part of an
equipment to check the specifications which are likely to vary
during production.
Routine Test
Preliminary operation of the machine to
make necessary adjustments prior to the conduct of test until the
operation is stable
Running In Period
Customized device in which all the instruments are set
to facilitate testing of a machine
Test Rig
In testing agricultural machines, what is the first thing that the engineer
must do?
to get acquainted with the construction and operation
features of the machine.
When machine breaks down or
malfunctions during the test, the testing may be suspended at
the discretion of the Test Engineer and concurred by the
manufacturer’s representative.
Suspension of Test
- It aims to promote a self-reliant agricultural and fisheries
machinery industry that would cater to and safeguard the interest of
Filipino farmers and fisher folks.
AMTEC
AMTEC
Agricultural Machinery Testing and Evaluation Center.
MEASUREMENT TECHNIQUES, TOOLS AND INSTRUMENT: – is measured by determining the length of two points with the use tape measure or Engineer’s Transit using stadia method
Distance for field measurement
MEASUREMENT TECHNIQUES, TOOLS AND INSTRUMENT: -is measured by means of a push roll tape, Vernier caliper for thicknesses as well as pipe inside and outside diameters.
Dimension of Machine Parts
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-Use of stop watch or by the use of alarm clock
Time
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-using ordinary glass bulb thermometer for low-temperature measurement, bimetallic and capillary thermometer for slightly high-temperature measurement or with thermocouple
wire sensor thermometer for high temperature. Thermocouple
wires with shield are usually used for a very high temperature of
as much as nearly a thousand °C. Infrared thermometer can
measure surfaces, if needed
Temperature
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-This is measured using manometer for most low
pressure measuring test. High-pressure measurement is done
with pressure gauges as well as for measuring vacuum pressure.
For high pressure, units in psi or kg/m2 or in Pascal. Vacuum
gauge uses in. or mm mercury
Pressure
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-Simple measurement using two glass-bulb
thermometers, one with wet wick and the other none, determines
the _______ of ambient air.
Relative Humidity
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-This is determined once the distance and
the time required to traverse the field are measured. Dividing the
distance with the travel time will give speed of the machine.
Speed of Machine
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-This can be measured using flow meter to
directly determine the velocity of flow or simply means of float
method for a certain floating device to traverse a certain distance.
Stream Velocity
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-Cup-type Wind Anemometer or a propeller-type wind
anemometer is used.
Wind Velocity
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-Usually determined in duct or gas piping to
determine the volume of gas passing through the duct pipe.
Thermo-anemometer are often used in measuring gas velocity.
It gives the velocity of the gas passing through a known area in
m/s
Gas Velocity
MEASUREMENT TECHNIQUES, TOOLS
AND INSTRUMENT:
-For slow rotating shaft, this is done with the use
of a counter that determines the number a shaft rotates at a
given time period. For high-speed shaft, measurement is done
with the use of a tachometer, either a contact-type or a non-contact-type meter.
RPM of Shaft
Critical assessment of a
machine or of a process under a
given set of operating conditions.
Testing and Evaluation
