Glass measuring several problems that should pay attention to
3. 1
all of the approach to measure is perpendicular to the two principal stress difference. If two principal stress is equal, even though the stress value is large, to measure the stress is zero, this phenomenon is often misleading, make people easy to ignore the real existence of stress. So, like the choice of the principal stress - zero parts as the measurement point.
3. 2
only vertical Yu Guanglu stress can be measured. If one dimensional principal stress direction of parallel light transmission, is also no stress error conclusions. The other aspects, this feature is often used to solve the above 3. 1 the issues discussed, such as two dimensional stresses are present in the eco-friendly tube, should make - parallel Yu Guanglu of principal stress, so as to accurately measure the other - the main stress value.
3. 3
measured stress is light through the glass in different positions and stress of algebra. If - the outer surface of the eco-friendly tube wall inner surface is tensile stress, compressive stress, and the light from one side of the bottle in, on the other side, the measured stress is the average of the various stress, around the actual stress is likely to be greater than the average.
3. 4
the incident direction of light must be vertical with the glass surface. Special products must be in the same as the glass refractive index liquid, to prevent the effects of the optical phenomenon such as reflection, refraction, which interferes with stress interference color, affect the stress measurement precision.
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The rise of the beauty economy has caused cosmetic brands to pay more and more attention to appearance packaging.
●Design team: cosmetics packaging design
●Project background: With the improvement of living standards, cosmetics, a fashionable consumer product, has gradually become the mainstream product in people's lives.
It is the nature of every woman to love beauty.
The cosmetics market has gradually improved in recent years
Now cosmetics are no longer exclusively for women
Cosmetic packaging is also gradually out of a more diversified style
Want to know the latest cosmetic packaging design trends?
You'll understand after reading this article!
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Cosmetic packaging is a subdivision field that has grown rapidly in recent yea
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Simplified packaging design style is a design direction recognized by young people and modern culture.
Consumer trends are the driving force of packaging innovation, and big data analysis is to combine trend insights with packaging innovation.
In order to attract consumers, in recent years, businesses have put more and more effort on cosmetic packaging, and various novel and exquisite packaging have emerged one after another.
In addition to the production date, manufacturer, etc., what are the secrets of the neglected graphic symbols, words, and numbers on the outer packaging of cosmetics?
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This common small open can logo means the shelf life after opening.