Engineering English
Non-Destructive Testing
Quality, Testing & Inspection · Materials Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A family of inspection techniques that evaluates the condition, properties or internal soundness of a material, component or weld without damaging it or impairing its future service. It allows parts to be examined and then returned to use.
Example in context
“All pipeline girth welds were cleared by non-destructive testing, so the line returned to service without cutting out a single sample.”
“Tüm boru hattı çevresel kaynakları tahribatsız muayene ile onaylandı, böylece hat tek bir numune kesilmeden servise döndü.”
Where engineers use it
Engineers meet non-destructive testing during fabrication, commissioning and in-service inspection of welds, castings, composites and pressure equipment. It is the only way to confirm internal soundness of finished hardware that must still be delivered and operated.
Synonyms: NDT, Non-Destructive Examination, NDE
In Materials Engineering
A group of inspection methods that reveal internal or surface flaws in a component without impairing its future usefulness. Typical techniques include ultrasonic, radiographic, magnetic particle, and penetrant examination.
“Every pressure-retaining weld on the vessel underwent non-destructive testing before hydrostatic pressure was applied during the final acceptance stage.”
Practice: can you use “Non-Destructive Testing” at work?
A client asks why you propose non-destructive testing instead of cutting coupons from a finished pressure vessel. Explain the principle, name two suitable methods and describe what each can and cannot reveal.
Show a model answer
“Non-destructive testing checks part integrity without damaging the component.”
“Non-Destructive Testing” in 21 languages
| English | Non-Destructive Testing |
|---|---|
| Turkish | Tahribatsız Muayene |
| French | Contrôle non destructif |
| German | Zerstörungsfreie Prüfung |
| Spanish | Ensayo no destructivo |
| Chinese | 无损检测 |
| Arabic | الاختبار غير المتلف |
| Portuguese | Ensaio não destrutivo |
| Russian | Неразрушающий контроль |
| Japanese | 非破壊検査 |
| Italian | Controllo non distruttivo |
| Vietnamese | Kiểm tra không phá hủy |
| Hindi | अविनाशकारी परीक्षण |
| Thai | การทดสอบแบบไม่ทำลาย |
| Indonesian | Uji tak merusak |
| Korean | 비파괴 검사 |
| Bengali | অবিনাশী পরীক্ষা |
| Dutch | Niet-destructief onderzoek |
| Swedish | Oförstörande provning |
| Finnish | Rikkomaton aineenkoetus |
| Ukrainian | Неруйнівний контроль |
Frequently asked questions
What does Non-Destructive Testing mean in engineering?
A family of inspection techniques that evaluates the condition, properties or internal soundness of a material, component or weld without damaging it or impairing its future service. It allows parts to be examined and then returned to use. In Quality, Testing & Inspection, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Non-Destructive Testing?
Non-Destructive Testing is pronounced /ˌnɒn dɪˈstrʌktɪv ˈtɛstɪŋ/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Non-Destructive Testing used in a sentence?
Example from an engineering context: “All pipeline girth welds were cleared by non-destructive testing, so the line returned to service without cutting out a single sample.”
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