検査技術研究所 Product Lineup

Our company manufactures and sells various types of probe cables. We produce cables for single probes, dual transducers, and array probes, as well as conversion cables and extension cables, including those for arrays. We can manufacture products according to your specifications, such as cable length and shielding.

• Flaw detection testing

By arranging a transducer that sends and receives ultrasonic waves inside the roller and lightly pressing it, ultrasonic waves can be transmitted to the test specimen with a dry or mist-like spray of water. Various types of probes, such as transmission method, dual transducers, angled, and arrays, can be manufactured.

• Flaw detection testing
• Other measurement, recording and measuring instruments

This is a specialized angled probe for ultrasonic testing of gas pressure welded joints of deformed bars for reinforced concrete, corresponding to JIS Z 3062:2014. We offer two types: one for general-purpose ultrasonic testing equipment and one for dedicated machines.

• Flaw detection testing

This is a dedicated angled probe for ultrasonic testing of welded joints of deformed bars for reinforced concrete, compliant with the Japan Reinforcing Steel Joint Association Standard JRJS 0005:2017. We offer two types: one for general-purpose ultrasonic testing devices and one for dedicated machines.

• Flaw detection testing

The tip of the delay material is conical. Ultrasound is focused through the thin tip and directed onto the test specimen. It is a pencil-shaped probe that is easy to hold and can easily be applied to sharp curves. It is useful for pinpoint flaw detection and thickness measurement.

• Other inspection equipment and devices
• Other measurement, recording and measuring instruments
• Flaw detection testing

■Overview A probe using a composite transducer as the core device of the transducer. In conventional probes, the echo from grain boundaries (noise echo) is large, resulting in a poor S/N ratio, making ultrasonic testing difficult for certain materials. By using composite core probes, noise reduction can be observed in ultrasonic testing of these materials, and an improvement in the S/N ratio can be expected.

• Flaw detection testing
• probe

We offer 10 types of vertical probes, ranging from ultra-compact and ultra-thin probes to standard types, as well as those with protective face and delay line, so that customers can select the probe that best suits their testing purposes. The lineup also includes the ultra-small probe "ChibiTa-kun," the ultra-thin probe "Pechako-san," the small probe MX with a hard front plate, the transverse wave vertical probe NY, and the point-focused vertical probe, among others.

• Flaw detection testing
• Testing Equipment and Devices

■Overview This is an angled beam probe primarily used for detecting defects in the thickness direction of welded joints, bars and pipes, shafts, and rails. The contact surface of the probe can also be machined to match the surface shape of the test object.

• Flaw detection testing
• Testing Equipment and Devices

■Overview This is a probe that can perform flaw detection using a dry coupling method that does not require a contact medium. ■Features -You can inspect for flaws immediately with just the flaw detector and probe. - No coupling paste required - Not affected by surface roughness - The contact surface of the probe is soft, allowing flexible contact with the test surface.

• Flaw detection testing
• Testing Equipment and Devices

KGK, a manufacturer specializing in probes, also manufactures and sells wedges and fixtures used for probes in-house. Because they are well-versed in probes as a specialized manufacturer, they can create wedges tailored to customer needs. KGK conducts integrated in-house production of wedges, producing a variety of types of wedges that match various probe and test specimen shapes according to customer requirements. We have experience manufacturing various products, including for straight beam probes, angle beam probes, dual element probes, linear array probes, matrix array probes, gel wedges, and more. Please feel free to contact us.

• Flaw detection testing

This is an immersion probe used for non-contact ultrasonic testing, such as ultrasonic flaw detect performed with a scanning device while fully submerged in water. It is also used for automatic ultrasonic flaw detect equipment, semi-automatic ultrasonic flaw detect equipment, or ultrasonic flaw detect using the water column method. In addition to ultra-compact probes like "Chibita-kun" and "Pechako-san," standard-size probes are also available. The probe's frequency bandwidth comes in variations such as narrowband and broadband. Depending on the application, the focal type can be selected from flat (non-focused), point focus (PF), or line focus (LF). For standard-size probes, the connector can be chosen according to the customer's preference from three types: Microdot, UHF, or M-type connectors.

• Flaw detection testing
• Testing Equipment and Devices

■Overview These are dual element probes used for flaw detection of steel plates and round bars, and for applications such as flaw detection and thickness measurement of steel plates, pipes, and tanks. They also include dual element angle beamed probes used for inspecting welded joints, and dual element longitudinal wave angle beamed probes used for flaw detection of austenitic stainless-steel welds. Customization of the shape of the probe and convergence distance is available. We also offer dual-element probe that meet the specifications defined in JIS G 0801.

• Flaw detection testing
• Testing Equipment and Devices

KGK, which developed the world's smallest probes "Chibi-ta-kun" and "Pechako-san," manufactures and sells insertion probes. These probes are used for thickness measurement and ultrasonic flaw detection by being inserted from the end faces of pipes such as heat exchanger tubes and hollow shafts. Additionally, insertion-type probes are useful for inspecting narrow and complex structures, such as the insertion parts of inspection jigs for aircraft engines. The insertion-type probes include various types, such as multi-channel probes that can be used in arrays, dual- element probes designed for thickness measurement, mirror-type reflective probes used for ultrasonic flaw detection and thickness measurement, angle-variable probes that can change the angle of the probe tip, and ultra-compact insertion probes. KGK designs and manufactures insertion-type probes tailored to the shape of the test specimen and the customer's requirements. Please contact us for more information.

• Flaw detection testing
• Testing Equipment and Devices

The probe, also known as a transducer, is an essential item for ultrasonic testing. KGK, as a specialized manufacturer of probes, has a wealth of experience in delivering a wide variety of probes. This document introduces special probes from KGK that are not listed in the catalog. To deepen your understanding of probes, we also provide some explanations about testing methods and probes, along with product introductions. We present unique and proven probes such as small probes, thin probes, array probes, longitudinal wave angled beam probes, variable angle probes, creeping probes, and others. Please use this material as a reference when considering probes.

• Flaw detection testing
• Testing Equipment and Devices

Special-purpose probes (custom probes, made-to-order probes) Examples of special-purpose probes: ● Low-frequency probes for applications such as flaw detection in Carbon composite, rubber, concrete, Engineered wood, etc. ● High-temperature probes for applications such as flaw detection and thickness measurement of high-temperature materials. ● Pencil-type probes suitable for thickness measurement in uneven surfaces. ● Insertion-type probes that can be used by being inserted into pipes. ● Roller probes (tire-type probes) that can be used for pulse reflection, transmission methods, etc. ● Airborne ultrasonic probes designed for flaw detection in air. ● Guided wave probes for guided wave flaw detection. ● We also accept inquiries for probes and fixtures for other special applications.

• Flaw detection testing
• Testing Equipment and Devices

In 1988, KGK developed the world's smallest ultrasonic probes: the ultra-compact probe “Chibita-kun” and the ultra-thin probe “Pechako-san.” Since then, KGK has offered a standard lineup of ultra-compact probes designed for ultrasonic testing in narrow and extremely small areas. Despite their small size, these reliable probes provide solid quality and performance. For vertical inspection and immersion testing, you can use the world’s smallest probes, “Chibita-kun” and “Pechako-san,” and for angle beam ultrasonic testing, you can choose from ultra-compact angle beam probes such as the UX, UM, and UA series, depending on your application. ● Ideal for testing in narrow spaces, etc. ● Ultra-small probes can scan surfaces that cannot be scanned with standard probes. ● ChibiTa-kun has φ2×3mmL (minimum) ● PechaKo-san has a thickness of 1mm ● We also welcome inquiries regarding size dimensions.

• Flaw detection testing
• Testing Equipment and Devices

Ultrasonic flaw detection Probes Comprehensive Catalog Ultrasonic flaw detection is an essential non-destructive testing method used in various industries, including aerospace, automotive, railway, shipbuilding, construction (such as towers, bridges, roads, and buildings), as well as in the gas and power industries, for the manufacturing and maintenance inspection of products and equipment. The Inspection Technology Research Institute is a specialized manufacturer of ultrasonic flaw detection probes, which are indispensable for ultrasonic flaw detection. The comprehensive catalog includes various probes and probe cables, including standard contact probes and angle beam probes, as well as special-purpose probes.

• Flaw detection testing
• Testing Equipment and Devices

● This is a probe that can perform flaw detection in accordance with the TOFD method standard NDIS2424. ● A lineup of probes that can be adapted to a minimum plate thickness of 4mm. ● We can manufacture probes corresponding to the specified frequency within the range of 1 MHz to 20 MHz. ●The TOFD (Time of Flight Diffraction) method is a technique in ultrasonic testing for estimating the height of flaws within a test object, and it is specified in the standards NDIS2423:2024 and ISO10863:2020. ●KGK Inc. (Kensa Gijutsu Kenkyusho) has developed a new ultra-compact probe capable of detecting defects in 4mm thick plates, in collaboration with Ultrasonic Measurement Technology LLC, in addition to its existing TOFD probes.

• Flaw detection testing
• Testing Equipment and Devices

● Array probes are probes used for phased array and synthetic aperture　focusing technique (TFM, FMC, SAFT, etc.) in ultrasonic flaw detection. ● Types include linear arrays, where transducers that transmit and receive ultrasound are arranged in a line; annular arrays, where transducers are arranged in concentric circles; and matrix arrays, where transducers are arranged in a grid pattern. ● Array probes can be manufactured not only in flat shapes but also in two-dimensional curved types, such as concave types that match the curvature of the test object, and even in three-dimensional curvature that sets the ultrasonic focus. There is also a wealth of experience with special specifications such as flexible,Insert inside and tire-shaped probes. Array probes are made up of multiple elements, with standard specifications ranging from 8 to 256 channels, but other numbers of elements can also be discussed. ● Standard support for 8 to 256 elements (other numbers of elements can also be discussed) ● There are many proven applications for straight beam inspection, angle beam inspection, immersion inspection, and using gel wedges, among others. ● Please consult us regarding frequency, transducer dimensions, channel count, connector shapes, etc.

• Flaw detection testing
• Testing Equipment and Devices

● Defects can also be detected with dry coupling. ● Scanning is possible with a small amount of water (mist spray level). ● Can be used to detect defects in samples where liquids cannot be applied. ● Gel wedges can be made to match the shape of conventional transducers or array probes. ● Can be made to match the shape of the sample. ● By using a gel sheet, shear waves can be propagated into the sample. ● The material of the gel sheet does not contain moisture (it is non-hygroscopic and does not absorb water).

• Defect Inspection Equipment
• Testing Equipment and Devices