We would like to introduce an application note on inspection methods for TKY welded joints provided by Eddyfi Technologies (case studies and technical introduction). For example, it addresses the challenges of inspecting fillet welds commonly used in the construction sector. Traditional inspection methods, such as ultrasonic testing (UT), have struggled with detecting flaws in the complex shapes of these welds, resulting in lower probabilities of detection. Eddyfi's solution utilizes advanced portable phased array equipment equipped with software tools that enable effective definition of T and Y joints, achieving improved overall inspection and detection probabilities. For more detailed information, please feel free to contact us.

Recent advancements in ultrasonic hardware and software have equipped almost all of our phased array ultrasonic testing devices with real-time full matrix capture and total focusing method. These represent a new generation of inspection technologies already defined in ASME and ISO standards. Austenitic stainless steel materials and dissimilar metal welds possess anisotropic coarse grain structures, resulting in specific behaviors of ultrasonic beams as they propagate through the material. This means high attenuation, high particle noise, beam redirection, and distortion; all of these phenomena ultimately lead to very challenging flaw detection conditions for phased array ultrasonic testing (PAUT). With the next generation of flaw detection equipment and high-performance probes offered by Eddyfi Technologies, we overcome challenges associated with inspecting high-difficulty materials such as dissimilar metal welds, including high ultrasonic attenuation, reduced signal-to-noise ratios, and insufficient coverage.

In aging infrastructures such as the petrochemical industry, potential vulnerabilities that plant engineers and maintenance teams should be aware of, particularly high-temperature hydrogen attack (HTHA), are cited as one of the dangerous defects. This defect occurs when hydrogen contained in low-alloy steel changes its atomic form at high temperatures, permeating the steel and forming methane. Once methane is trapped within the metal, tiny bubbles form, ultimately leading to cracking and fissures. Eddyfi proposes advanced, portable ultrasonic inspection tools for the early detection of HTHA, utilizing TOFD, phased array ultrasonic testing (PAUT), and the latest total focusing method (TFM). This technology enables early detection of HTHA, enhancing the safety of critical equipment. For more detailed information, please [contact us].

To ensure the smooth operation of transport pipes that transport products to various areas of the production plant, regular evaluation of the piping, including all branch connections, is necessary. Since piping and other plant equipment are subjected to periodic and very high thermal stress from the condensate and steam systems, the risk of fatigue cracking increases. In order to maximize productivity in an economic environment where efficiency is required, a non-destructive testing approach is needed to assess the fitness for service (FFS) of these production facilities.

超音波ハードウェアとソフトウェアの近年の進歩により、当社のほぼ全てのフェーズド アレイ超音波検査装置にはリアルタイムのフル・マトリックス・キャプチャ と トータル・フォーカシング・メソッド を搭載しています。これらは、 ASME および ISO 規格において既に規定されている新たな世代の検査技術です。 ステンレス鋼のオーステナイト材料や異種金属溶接部は異方性の粗粒構造を持っており、その結果、材料中を伝播する際に超音波ビームの特定の挙動が生じます。つまり、高い減衰、高い粒子ノイズ、ビームの方向転換と歪み、これらすべての現象は最終的に、フェーズド アレイ超音波検査 (PAUT)検査にとって非常に困難な探傷条件をもたらします。 Eddyfi Technologies が提供する新世代の探傷装置と高性能プローブにより、異種金属溶接などの高難易度材料の検査に伴う、超音波の高減衰、信号対ノイズ比率の低下、不十分なカバレッジなどの課題を克服します。

石油化学産業などの老朽化したインフラにおいて、プラントエンジニアや保守チームが認識すべき潜在的な脆弱性、特に高温水素アタック（HTHA）は、危険な欠陥の一つとして挙げられます。この欠陥は、低合金鋼に含まれる水素が高温で原子形態を変え、鋼内に浸透してメタンを形成することで発生します。メタンが金属内に閉じ込められると、微小な泡が形成され、最終的にはひび割れや亀裂につながります。EddyfiはHTHAを早期に検出するための高度な、ポータブルな超音波検査ツールとして、TOFD、フェーズドアレイ超音波試験（PAUT）、および最新のトータルフォーカシングメソッド（TFM）を使用した解決策を提案します。この技術により、HTHAの早期検出が可能となり、重要な設備の安全性を高めることができます。より詳しい情報を提供しております、【お問い合わせ】ください。