Measurement of moisture absorption distortion

We investigated the behavior of strain during moisture absorption and drying using a strain gauge!

We would like to introduce the results of our investigation into the behavior of strain during moisture absorption and drying using strain gauges. It was observed that the material expands when absorbing moisture and contracts back to its original state when drying, with the strain returning to the condition prior to moisture absorption. Regarding FR-1, it is presumed that it did not return to its original state due to changes in the chemical structure of the material caused by hydrolysis. 【Test Overview】 ■ 85℃ 50% ⇒ 85℃ 85% ⇒ 85℃ 50% ■ Test Materials ・FR-1 Paper Phenolic (single-sided board) ・FR-4 Glass Epoxy (single-sided board) ■ Strain Gauge ■ Foil Strain Gauge for Composite Materials *For more details, please download the PDF or feel free to contact us.

• Contract measurement

Observing the behavior of strain in thermal shock testing! The test materials used are FR-1 and FR-4.

We would like to introduce the "Strain Measurement of Thermal Shock Testing" conducted by our company. A sample with a strain gauge attached was set up in the thermal shock testing device, and the wiring of the strain gauge was connected to an external data logger to record the strain data in real-time during the test. The strain behavior during the thermal shock test was observed for two types of copper-clad laminates, and it was noted that significant strain occurred with changes in temperature. It was found that FR-1 exhibited greater strain compared to FR-4. [Test Conditions] ■ Temperature Cycle: -30°C to 120°C ■ Exposure Time at Each Temperature: 30 min ■ Test Materials - FR-1 Paper Phenolic (Double-sided board) - FR-4 Glass Epoxy (Double-sided board) ■ Strain Gauge: Foil strain gauge for printed circuit boards *For more details, please refer to the PDF document or feel free to contact us.

• Contract Analysis

We conduct reliability evaluation tests for various electronics products, components, and materials in accordance with standard specifications such as JIS, JEDEC, and MIL.

■High Accelerated Life Test: 5 units ■Thermal Shock Test: 24 units ■Constant Temperature and Humidity Test: 22 units ■Liquid Tank Thermal Shock Test: 3 units ■High Temperature Storage Test ■Hot Oil Resistance Evaluation Test ■Insulation Resistance Continuous Monitoring Evaluation ■Continuity Resistance Continuous Monitoring Evaluation ■Electromigration Continuous Monitoring Evaluation ■Microfocus X-ray Transmission Observation ■Ultrasonic Microscope Observation ■ESD Evaluation Test ■CDM Evaluation Test ■Universal Tensile Evaluation Test ■Cross-section (Polishing) Observation Service (Evaluation before and after environmental testing is also possible) ■Solar Cell (Crystalline Silicon/Amorphous Silicon/Compound/Organic Thin Film, etc.) EL Emission Phenomenon ■Heat Generation Observation

• Testing Equipment and Devices
• Other inspection equipment and devices
• Contract Inspection

Two high-power constant temperature and humidity chambers have been introduced! Ideal for temperature cycle tests and temperature and humidity cycle tests for automotive parts and more.

At AITES Co., Ltd., we offer "environmental testing in a high-power constant temperature and humidity chamber." We can achieve a constant temperature change of up to 15°C/min (-45 to ±155°C). Temperature cycle tests can be conducted by controlling the temperature gradient. Additionally, the temperature control range is wider than that of typical constant temperature and humidity chambers, allowing control at 95°C. 【Features】 ■ Two high-power constant temperature and humidity chambers introduced ■ Constant temperature change of up to 15°C/min (-45 to ±155°C) possible ■ Temperature cycle tests can be conducted by controlling the temperature gradient ■ Wider temperature control range than typical constant temperature and humidity chambers ■ Controllable at 95°C *For more details, please refer to the PDF materials or feel free to contact us.

• Contract Analysis
• Contract measurement
• Contract Inspection

Applicable to change observation, with support for additional analysis! We evaluate the subject in a time series and non-destructive manner.

During reliability testing, the samples change continuously. Do you have any questions such as "At what point did the crack occur?", "How does the degradation progress?", or "How much has it changed from the initial state?" By combining this with reliability testing, we will evaluate the subject in a time-series and non-destructive manner. 【Features】 ■ Applicable for observing changes in whiskers, migration, pressure resistance, solder evaluation, chemical erosion tests, and aging products in the market ■ Environmental tests and observation frequency will be conducted according to customer requirements ■ Additional analyses such as electrical characteristics, SEM observation, elemental analysis, and cross-sectional observation are also available *For more details, please refer to the PDF document or feel free to contact us.

• Testing Equipment and Devices
• Other inspection equipment and devices
• Contract Inspection

Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

At construction sites, temporary parking lots may be established for workers and construction-related vehicles. On unpaved ground, mud and ruts can easily occur due to rain, which may hinder vehicle access. Hyper CLT mats are civil engineering materials that utilize wood CLT. By laying them in temporary parking lots, a suitable environment for vehicle passage and parking can be created while protecting the ground. They can be laid only in the necessary areas, and after the construction is completed, they can be removed and repurposed for temporary roads or access routes. The 5×10 panels weigh approximately 230 kg, and the 5×20 panels weigh about 460 kg, making them lightweight and easy to install and remove even with small machinery, allowing for changes in parking space. Additionally, they offer benefits unique to wood, such as glare reduction, noise reduction, and CO2 fixation. They are registered as a technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS as "TH-250021-A," and can be utilized for the development of temporary parking lots and innovative public works.

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding repair methods can change the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for the repair of metal cracks without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material at all. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding repair methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" or "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repair without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.