适用范围：

l        适合于检测灯等有复杂构造的产品。

l        检测高密度的塑料产品，如隐形眼镜等。

l        检测光学晶体，如氟化钙等

参数：

1. Sensitive-Color感光色方法检测

 感光色方法测量，整个视野呈微红-紫色，这种彩色分为被成为感光色。

放进样品，存在应力的部位呈绿-蓝色或橙黄-黄色。并确定应力性质是压力或张力。

不存在应力的样品部位则呈微红-紫色。

2. Senarmont补偿法检测

   温度补偿法可以进行应力定量分析检测。

不旋转分析仪，整个视野范围是黑色的。

旋转分析器，既能观测到最亮点即应力最大值。
旋转分析器时，记录角度，即可用公式换算出应力值。

In the Sensitive-Color Method, the whole visual field is seen for the reddish purple color. This color tone is called sensitive color. The part with the strain changes in green blue color and orange yellow color, when the observation sample is put in, and the stress confirms compressive stress or tensile stress. The part without the strain is seen for the reddish purple color as well as the whole visual field.

Stress-direction-determining bar with no strain Stress-direction-determining bar <Acryl> having strain Stress-direction-determining bar <Glass> having strain The whole bar appears in reddish purple (sensitive color) similarly to the color of visual field. When force is applied with fingers to a bar, stress in tension is liberated in the direction indicated by arrows ←→ in the upper region of the bar, while stress in compression is liberated in the direction indicated by arrows ←→ in the lower region of the bar. When force is applied with fingers to a bar, stress in tension is liberated in the direction indicated by arrows ←→in the upper region of the bar, while stress in compression is liberated in the direction indicated by arrows←→ in the lower region of the bar.

* Due to difference in quality of a material, such as glass and acryl, there may a case that the foresaid relativity between the stress direction and the color change cannot be applied. In order to carry out accurate determination, it is recommended to check color change beforehand with a bar-shaped sample for preliminary purpose, which is made of the same material as that of a sample to be inspected.

Flowing State of Resin	Unevenness of Film	Strain resulted from Processing
Strain and cracks in a molded article.
Sample with substantially no strain Color of region in outer periphery of a sample, where strain exists, changes to greenish and bluish color or orangish and yellowish color.	Sample with less degree of strain A rotating frame of analyzer is rotated so that a region to be assayed (indicated with an arrow) gets darker.	Sample with greater degree of strain Color change of region in the outer periphery of a sample, where strain exists, extends inwardly. Also, the yellowish or bluish color appears more intensive and brighter than that of a sample with less degree of strain.
Sample at the Reference Position/ Rotated Angle 0 Only X-shaped region in the transmission axis direction of a polarizer or an analyzer does not cause color change and is kept in reddish purple color (sensitive color) similarly to the visual field.	Sample rotated by 45 X-shaped region appeared in sensitive color remains in the same direction irrespective of the direction change of a sample. Due to this, the pattern of strain varies.	Sample rotated by 90 Pattern of strain in a sample is same as that of a sample at the reference position.

1.       Sensitive-Color感光色方法检测

 

In Senarmont Method, it is a test method for carrying out strain quantitative measurement. The whole visual field is ignorantly seen for the black, when the angle scale of the analyzer is adjusted in 0 degrees. The observation sample is put in, the position which sees the part which wants to determine the strain quantitatively the most bright is searched and is fixed, while it is rotated. Next, the angle is read in the position that it does the slow rotation of analyzer rotating frame and sees the most versed. The rotation angle is applied to calculation formula, and the strain amount is obtained. Still, the calculation is unnecessary, because the look up table was attached to goods.

Example of Appearance under Inspection
		Rotated Angle of Analyzer 0°	Rotated Angle of Analyzer 7°
	Example of angle scale of analyzer pointing at 7°
	Rotated Angle of Analyzer 0°	Rotated Angle of Analyzer 11°	Rotated Angle of Analyzer 28°
	Example of angle scale of analyzer pointing at 28°
Rotated Angle of Analyzer 0°	Rotated Angle of Analyzer 20°	Rotated Angle of Analyzer 35°	Rotated Angle of Analyzer 0°

2. Senarmont补偿法检测