Polariscope Strain Viewer Digital
Polariscope Strain Viewer – Digital he 4B Digital Polariscope Strain Viewer is a laboratory and quality-control instrument designed for qualitative inspection of internal stresses and residual strains in transparent and translucent products.
It is particularly useful for inspecting glass bottles, pharmaceutical glass containers, ampoules, vials, PET preforms, plastic bottles, acrylic components, transparent injection-moulded parts and other birefringent materials.
The sample is placed between polarized light components and viewed through the optical system. Stress patterns become visible as changes in colour, brightness and interference patterns. This helps manufacturers identify uneven annealing, moulding stresses, processing defects and excessive residual stress. Polariscopic examination is also recommended in connection with certain plastic test methods to identify specimens having abnormal internal strain.
Description
Polariscope Strain Viewer – Digital he 4B Digital Polariscope Strain Viewer is a laboratory and quality-control instrument designed for qualitative inspection of internal stresses and residual strains in transparent and translucent products.
It is particularly useful for inspecting glass bottles, pharmaceutical glass containers, ampoules, vials, PET preforms, plastic bottles, acrylic components, transparent injection-moulded parts and other birefringent materials.
The sample is placed between polarized light components and viewed through the optical system. Stress patterns become visible as changes in colour, brightness and interference patterns. This helps manufacturers identify uneven annealing, moulding stresses, processing defects and excessive residual stress. Polariscopic examination is also recommended in connection with certain plastic test methods to identify specimens having abnormal internal strain.
Feature
- Digital Polariscope Strain Viewer
- High-quality polarized optical system
- Clear and sharp stress-pattern observation
- Large viewing area
- Digital LED illumination/display system
- 45° and 90° standard viewing positions
- Adjustable sample positioning
- Polarizer and analyzer arrangement
- Uniform illumination
- Suitable for glass and transparent plastic products
- Easy identification of residual stress patterns
- Suitable for quality inspection and production monitoring
- Compact laboratory design
- Robust construction
- Optional camera/software system for image recording and comparison
Technical Specialization
Parameter | Specification |
Product | Polariscope Strain Viewer – Digital |
Type | Digital Optical Polariscope |
Application | Internal Stress / Strain Inspection |
Viewing Area | Approx. 260 × 240 mm* |
Viewing Angle | 45° & 90° |
Light Source | LED / Fluorescent / Sodium Light* |
Display | Digital |
Optical System | Polarizer + Analyzer |
Sample Type | Transparent & Translucent Materials |
Sample Material | Glass, Plastic, PET, Acrylic, etc. |
Power Supply | 220–240 V AC, Single Phase, 50 Hz |
Camera | Optional High-Resolution Camera |
Software | Optional Image Analysis / Data Management |
Construction | Heavy-Duty Laboratory Design |
Applications
Glass Industry
Used for detecting internal stress in:
- Glass bottles
- Pharmaceutical bottles
- Vials
- Ampoules
- Beverage bottles
- Food containers
- Cosmetic glass containers
- Other annealed glass products
Plastic & PET Industry
Suitable for:
- PET preforms
- PET bottles
- Plastic bottles
- Transparent injection-moulded components
- Acrylic products
- PC components
- Transparent plastic sheets
- Other translucent plastic products
Polariscope inspection is used for transparent plastics and PET/preform-type products to identify residual stresses produced during moulding, processing and cooling.
4B Testing Equipments Pvt. Ltd.
4B Testing Equipments Pvt. Ltd. manufactures Digital Polariscope Strain Viewers / Polariscope Stress Viewers for the inspection and evaluation of internal stress, residual strain and birefringence in transparent and translucent materials such as glass, plastic, PET preforms, bottles and injection-moulded components.
The instrument works on the photoelastic/polarized-light principle. Internal stresses in transparent or translucent materials produce optical birefringence, which appears as characteristic colour or light/dark patterns when viewed through crossed polarizing filters. This allows operators to identify areas of excessive residual stress and evaluate manufacturing or annealing quality. ASTM D4093 specifically covers photoelastic measurements of birefringence and residual strains in transparent or translucent plastics.
