When materials are exposed to outdoor environments, sunlight is one of the most aggressive aging factors. UV radiation, heat, and
moisture continuously degrade plastics, coatings, and rubber, causing fading, cracking, and loss of mechanical strength. To avoid field failures, industries rely on accelerated weathering systems that can reproduce years of sunlight exposure in a controlled laboratory environment.
Recently, a Vietnam customer using the LIB Xenon Arc Accelerated Weathering Chamber (XL-S-750) shared positive feedback after long-term operation: "The chamber works stably. Thank you so much for this document." This reflects the reliable performance and stable operation of LIB equipment in real industrial applications, as well as the value of consistent maintenance support and technical documentation provided by LIB engineers.
This article explains how Xenon Arc Accelerated Weathering Chamber simulate natural sunlight exposure using ASTM G155-21 and other global standards, and how LIB's xenon arc weathering system ensures accurate, repeatable, and real-world aging results for material durability evaluation.
Precision Light Control in Xenon Arc Accelerated Weathering Chambers
1. Full-Spectrum Xenon Light Simulation System
Xenon Arc Accelerated Weathering Chambers simulate sunlight using a high-intensity xenon arc lamp that reproduces UV, visible, and infrared radiation. LIB
systems use a 4500W water-cooled xenon lamp with optical filters that replicate different environments such as daylight and window glass exposure. According to ASTM G155-21, the spectral range must cover 280–800 nm, ensuring realistic solar simulation. Irradiance is typically controlled at 0.3–1.5 W/m² @ 340 nm, depending on test severity.
2. Xenon Chamber vs Natural Outdoor Exposure
Natural weathering tests depend on geographic location, season, and unpredictable weather, often requiring 12–24 months for meaningful results. In contrast, Xenon Arc Accelerated Weathering Chambers can compress exposure into hundreds or thousands of hours, while maintaining controlled conditions. Unlike outdoor testing, LIB systems eliminate variability in UV intensity, rainfall timing, and temperature fluctuations, ensuring highly repeatable and standardized results aligned with ISO 4892-2 and ASTM G155 requirements.
3. Working Principle of Sunlight Simulation
The chamber combines light, temperature, humidity, and spray cycles to replicate real outdoor conditions. Black Panel Temperature (BPT) is controlled between 35°C and 100°C, while humidity cycles simulate dew formation and rainfall. Water spray systems reproduce natural precipitation, and rotating sample racks ensure uniform exposure across all specimens, minimizing test deviation below ±5% irradiance variation.
Xenon Arc Accelerated Weathering Chamber vs UV Test Chamber: How to Choose
A Xenon Arc Accelerated Weathering Chamberand a UV test chamber serve different purposes in accelerated aging.
UV test chambers typically use UV fluorescent lamps (UVA-340 or UVB-313) with wavelengths concentrated around 280–400 nm, focusing mainly on short-wave UV degradation. These systems are widely used in fast screening tests such as coatings or polymers.
In contrast, Xenon Arc Accelerated Weathering Chambers reproduce the full solar spectrum (280–800 nm), including UV, visible light, and infrared heat. This makes them closer to real outdoor sunlight conditions. According to ASTM G155-21 and ISO 4892-2, xenon arc testing is recommended for automotive plastics, coatings, textiles, and long-term outdoor materials.
How to choose:
Choose UV test chamber → fast screening, low-cost, short-cycle comparison
Choose Xenon Arc Accelerated Weathering Chamber → real sunlight simulation, certification-level durability validation, long-term aging prediction
LIB xenon chambers provide irradiance control accuracy within ±0.02 W/m², making them suitable for high-end validation where real-world correlation is critical.
Plastic Aging Testing Based on ASTM G155-21 Standard
One of the most widely used standards for xenon arc testing is ASTM G155-21, which defines how to simulate sunlight exposure for non-metallic materials.
1. Standard Requirements (ASTM G155-21)
Light source: Xenon arc lamp with daylight filter
Spectral range: 280–800 nm
Irradiance: Typically 0.35–0.55 W/m² @ 340 nm
Black panel temperature: 63°C ± 3°C (standard cycle)
Relative humidity: 50%–95% depending on cycle
Water spray: Intermittent or continuous cycles
2. Common Cycle Example (Cycle 1 – General Plastics & Coatings)
a. 102 minutes light exposure at controlled irradiance
b. 18 minutes light + water spray
c. Chamber temperature: 38°C–65°C
d. Repeated continuously for 500–2000 hours
3. LIB Xenon Arc Chamber (Model Example: XL-S-750)
LIB's XL-S-750 xenon arc weathering chamber is designed specifically for ASTM G155-21 compliance, offering:
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Model |
XL-S-750 Xenon Arc Weathering Test Chamber |
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Internal Dimension (mm) |
950*950*850 mm |
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Overall Dimension (mm) |
1300*1420*1800 mm |
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Sample holder |
Adjustable speed, 1r /min |
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Chamber Type |
Rotating Holder |
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Irradiation Source |
1 piece of 4500w water-cooled xenon arc lamp with inner quartz and outer borosilicate filter |
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Irradiance Range |
150 W/㎡ |
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Bandwidth Measurement |
300~400 nm |
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Chamber Temperature Range |
-40～ 100 ℃ ±2 ℃ |
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Black Panel Temperature |
BPT 35 ～ 85 ℃ ±2 ℃ |
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Humidity Range |
30 % ~ 98 % RH |
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Water Spray Cycle |
1~9999 H 59 M (Adjustable) |
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Controller |
Programmable color LCD touch screen controller |
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Radiometer |
UV Radiometer, Tolerance: ±5 % |
Multi-standard compatibility including ASTM G155, ISO 4892-2, and SAE J2527
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xenon lamp and filters
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| Spraying system provides uniform water over specimens. Automatic water supply, filtration, and drainage ensure uninterrupted long-term testing. | |
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| Workroom |
Hanging specimen |
Key Advantages of LIB System
a. High spectral stability ensures long-term repeatability across tests
b. Water-cooled lamp system reduces heat drift and extends lamp life to over 1600 hours
c. Smart PID control maintains strict temperature and humidity accuracy
d. Automated cycle programming supports multi-stage aging tests without manual intervention
e. Global service support with 3-year warranty and fast spare parts delivery within 7–15 days
FAQs on Xenon Arc Accelerated Weathering Chambers
Q1: How long does a xenon lamp last, and how often should it be replaced?
A xenon lamp typically lasts 1600 hours depending on irradiance settings. LIB provides lifetime tracking and automatic warning systems when replacement is needed to ensure test accuracy.
Q2: Can LIB provide installation and calibration service overseas?
Yes. LIB offers global installation support through certified partners. Remote commissioning and on-site calibration services are available in regions including Europe, North America, and Asia. Technical support is available 24/7 in English.
Q3: How is the chamber shipped and installed?
LIB xenon chambers are delivered in pre-assembled or modular shipping units. Standard models can be installed within 1–3 days, while larger systems may require 3–7 days depending on site conditions. All units are packaged with reinforced export-grade protection for safe international transport.
Q4: What materials can be tested in a xenon lamp weathering chamber?
Xenon Arc Accelerated Weathering Chambers are widely used for testing plastics, coatings, rubber, textiles, automotive parts, and outdoor construction materials. They are especially suitable for materials that require full-spectrum sunlight simulation under standards such as ASTM G155-21 and ISO 4892-2, including long-term UV resistance and color fading evaluation.
Q5: Can the test parameters be customized for different standards?
Yes. LIB xenon chambers support fully programmable test cycles, including irradiance levels, temperature (typically 35°C–100°C), humidity (up to 95% RH), and spray intervals. Users can easily configure cycles according to ASTM, ISO, SAE, and custom in-house testing requirements for different material aging simulations.
Contact LIB Industry to select the right xenon arc weathering chamber for your material testing needs and receive a customized solution for ASTM-compliant sunlight simulation testing.
