1. Introduction.
1.1 Research Background
- Effect of Economic recession on consumer
These days, college students are suffering from economic difficulty due to the recent recession. Their biggest interest is in 'money'. This phenomenon has been caused by the global recession which led also to the domestic depression which is still ongoing. We could see this more clearly in a famous part
3. Experiment Method
A measurement method of sample of powder form is an x-ray diffractometor(Fig. 9).
Fig. 9. An x-ray diffractometer.
3.1. Making of Sample Powder
A Sample is made a powder form. A diameter of powder has good reproducibility as smaller. But generally 10~35μm is a suitable size of sample. We must caution a deterioration by air, gas, humidity and pouri
axis and the line
which contacts uniaxial compressive circle and tensile circle
in Mohr's stress test.
2. METHOD OF CONCRETE
STRENGTH TEST
Testing for Compressive Strength
of Molded Concrete Cylinders
Testing for splitting tensile Strength
of Molded Concrete Cylinders
Test progress
between the transducer and the test surface.
When scanning over the part or making precise measurements, an immersion technique is often used. In immersionultrasonic testing both the transducer and the part are immersed in the couplant, which is typically water. This method of coupling makes it easier to maintain consistent coupling while moving and manipulating the transducer and/or the part.
methods that can be measure Young's modulus with reliability and reappearance are needed to develop the new materials i.e. composite and thin film materials.
In general, there are two methods to measure the Young's modulus. The first one is called the 'static method' that is the way to measure the deformation strain that are corresponded to applied force using the strain gage. In other way, 'k