A piston pressure device includes a gas concentration-regulating piston pressure device and a high temperature autoclave. In the gas concentration-regulating piston pressure device, the proportion and concentration of corrosive gases can be accurately adjusted, intermediate gases can be stored and filled into the high temperature autoclave according to experimental needs, and an actual corrosion process in oilfield is accurately simulated. Meanwhile, the corrosive gases can be supplemented in real time during the experiment, and dynamic gas distribution in a high-temperature high-pressure corrosion experiment process is realized. The present invention has the advantages as follows: the piston pressure device is resistant to high temperature and high pressure, corrosion-resistant, simple in structure and convenient to operate; the concentration and proportion of the corrosive gases are accurately controlled to be invariable in the high-temperature high-corrosion experiment process; and reliability of high-temperature high-pressure corrosive experimental results is increased.

An apparatus for artificial weathering or lightfastness testing of samples comprises a weathering chamber, a first light source provided in the weathering chamber, the first light source comprising one or more fluorescent UV lamps each comprising an emission spectrum with a maximum wavelength below a predetermined wavelength, and a second light source provided in the weathering chamber, the second light source comprising one or more light emitting diodes each comprising an emission spectrum with a maximum wavelength above the predetermined wavelength.

A method for the development of a thermally insulating sandwich-structured laminate, such as a sandwich-structured laminate of a housing of a climate chamber for the high temperature range, with an internal wall and an external wall, can include the method steps: providing the internal wall, adhering at least one high temperature stable insulation panel onto the internal wall, positioning the external wall with respect to the internal wall such that between the internal wall and the external wall the at least one high temperature stable insulation panel and a hollow volume are developed. The method can further include filling the hollow volume with a PUR foam for the formation of a second rigid foam layer connecting the at least one high temperature stable insulation panel and the external wall.

The multiple rig stress corrosion cracking testing device is a stress corrosion cracking and sulfide stress cracking testing device for engineering material specimens. The device includes a pressure and temperature autoclave chamber and also includes four testing rigs for simultaneous stress corrosion cracking testing of a circumferential notched tensile specimen, a compact tension or a double cantilever beam specimen, a cantilever bend specimen, and a center cracked plate specimen under varying experimental conditions. The specimens may be of similar or different materials.

A dynamic corrosion and degradation testing installation is provided. The installation includes a tank for heating and storing, in use, a fluid at a given temperature. The installation further includes a looped circuit including a pipe containing the fluid during one or more tests, having a first end and a second end both connected to the tank. The installation also includes a pump for circulating the fluid in the pipe and multiple test stands located at different locations along the pipe. Each test stand including a sample holder or testing chamber holding, in use, a solid sample in contact with the fluid and a heater and configured to heat the sample holder. Each test stand includes the sample holder to hold the solid sample in a specific portion of the pipe. The specific portions of the pipe having the functionality of a test chamber and containing the fluid.

The present disclosure provides an in-situ successively fixing rolling type holding device for use in a low-temperature environmental test chamber. The holding device includes a bracket, multiple holding components, and a conveying device. The bracket is fixed in the low-temperature environmental test chamber. The driving mechanism is used for driving the conveying member to rotate, thus making multiple test articles successively pass through the test position in the low-temperature environmental test chamber for the in-situ measurement. The present disclosure can reduce the times of door opening of the low-temperature environmental test chamber during the successive in-situ measurements of multiple test articles in the low-temperature environmental test chamber, thus preventing the door opening and closing of the low-temperature environmental test chamber and the transfer of test article from causing the temperature fluctuation in the temperature field where the test articles are located.

An experimentation method for a type I stress intensity factor test considering frost heaving force periodic changes, steps being 1: preparing a specimen, waterjet cutting on the specimen to simulate a non-penetrating rock mass fracture; step 2: vacuum saturating the specimen; step 3: affixing a strain gauge in a non-elastic area at a tip of the specimen; step 4: placing the specimen into a rock mass (1) fracture frost heaving experiment box (5), pressurizing by a pressurizing apparatus (4) balloons on either side of the frost heaving experiment box (5), shutting a valve and removing a pipe, placing the frost heaving experiment box (5) holding the specimen into a water tank, allowing water to immerse the specimen; and step 5: placing the water tank and the frost heaving experiment box (5) holding the specimen together into a high-low temperature alternating experiment box (7) to start a freeze-thaw cycle experiment.

An accelerated life testing (ALT) system for the pressurization of corrosive media, such as seawater, at high pressures and at elevated temperatures (up to about 70° C.) for extended periods of time. The interior of a pressure vessel is coated in an inert ceramic/epoxy coating that provides adequate corrosion protection from the corrosive media. A fabric reinforced nitrile diaphragm separates the corrosive media from hydraulic actuating media, such as oil. The hydraulic actuating media is pressurized, which deforms the diaphragm into the corrosive media, thereby increasing the pressure. The diaphragm and supplementary flouroelastomer seals isolate the corrosive media from pressure generating, monitoring, and safety equipment. The temperature of the entire vessel and contents is maintained by complete immersion in a heated, filtered water bath. The system is particularly useful for ALT experiments on components intended for sea floor and long term deep ocean environment operations at about 6000 psi (41.4 MPa).

An evaporator for environmental test chamber includes a plate-type fin and plurality of pipelines wherein: the pipelines are divided into three types: refrigerating pipelines, dehumidifying pipelines and defrosting pipelines; the refrigerating pipelines are arranged alternately one by one, more by more, and one by more with the dehumidifying pipelines in transverse direction of a plate surface of the plate-type fin; refrigerating pipelines receive a refrigerating refrigerant supplied from a refrigerating-system, the dehumidifying pipelines receive dehumidifying refrigerant supplied from a dehumidifying-system, and defrosting pipelines receive hot air discharged from the dehumidifying-system compressor exhaust hole. The evaporator is simultaneously used for refrigerating and dehumidifying, and refrigerating and dehumidifying share the evaporator's whole evaporation area, and at least one evaporator pipeline is remained to serve as the defrosting pipelines, guiding the hot air output from the compressor of the dehumidifying-system to the evaporator to heat the evaporator surface to achieve the defrosting effect.

The present invention is a corrosion environment diagnosis system including: an environment measuring device that includes a temperature sensor that measures temperature in an electronic part serving as a diagnosis target or an indoor space in which an electronic device including the electronic part is installed, a humidity sensor that measures relative humidity in the indoor space or the electronic device, a corrosion sensor that measures a corrosion thickness of the diagnosis target, and a database in which indoor environment data including the temperature and the relative humidity measured by the temperature sensor and the humidity sensor and corrosion thickness data including the corrosion thickness measured by the corrosion sensor are accumulated; an outside air environment database in which outside air environment data including previous temperature and humidity of outside air is recorded; and a diagnostic processing device capable of receiving data of the outside air environment database and the environment measuring device, wherein the diagnostic processing device decides a corrosion mechanism corresponding to a relation between the corrosion thickness and the relative humidity on the basis of the indoor environment data, the corrosion thickness data, and the outside air environment data, and estimates a future corrosion thickness of the diagnosis target. Accordingly, it is possible to accurately estimate a future corrosion thickness on the basis of a mechanism of corrosion by atmospheric air including corrosive gas.