Start your NDT career by finding the crack yourself.

The welded plate below hides one crack. Slide the probe until the crack echo climbs past the gate. That's how a UT technician works, and it's how you'll learn here.

Written and taught by an ASNT NDT Level III, in English and Bahasa Indonesia.

Flaw detectorHK-UT 6
dB
34.0
SA ↘
—
DA ↓
—
PA →
—
A% 1
0%
G2−G1
—
100806040200 0102030405060708090100 1
V 3240 m/s · Z 8.40 µs ·θ 60.0° · T 25.0 mmSA mm
Gain 34.0 dB
Specimen · Weld plateAngle beam 60° 4 MHz 8×9 mm
crack ← drag the probe → Scale 10 mm Plate: length 240 × width 150 × thickness 25 mm
Probe index: X 64.0 mm · facing right Wave: shear

Demo running. Drag the probe or use the slider to try it yourself.

The screen, the weld plate and the physics are the same as the HK-UT 6 simulator in the UT course. A 5 mm crack in the weld sits square to the 60° beam. Gate 1 is at 30 to 60 mm. Illustrative numbers.

Six methods, six ways to see a crack.

Every course has interactive lessons, an equipment simulator, a bilingual Level II workbook and a question bank with a mock exam. Lesson 1 is always free.

Particles pile up over a surface crack.

Magnetic Particle Testing

Uji Partikel Magnetik

Why iron powder finds cracks, how to magnetise a part, and how to read what you see.

  • 9 interactive lessons
  • Yoke simulator
  • Level II workbook
  • Question bank, 109 questions
Rp300.000Rp500.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart
Red penetrant bleeds out of the crack into white developer.

Penetrant Testing

Uji Penetrant

Dwell time, removal and developing, and how to read the indications that appear.

  • 7 interactive lessons
  • Penetrant simulator
  • Level II workbook
  • Question bank, 100 questions
Rp300.000Rp500.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart
The crack echo rises inside the gate.

Ultrasonic Testing

Uji Ultrasonik

Sound paths, angle beams and the A-scan, with the probe simulator you can drag yourself.

  • 14 interactive lessons
  • HK-UT 6 flaw detector and 10 practicals
  • Workbook and practical guide
  • Question bank, 100 questions
Rp500.000Rp700.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart
Undercut at the weld toe, marked with a paint marker.

Visual Testing

Uji Visual

Light, the eye, optical aids and the inspection that comes before every other method.

  • 9 interactive lessons
  • Visual inspection simulator
  • Level II workbook
  • Question bank, 111 questions
Rp200.000Rp300.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart
The crack signal rises off the lift-off line on the impedance plane.

Eddy Current Testing

Uji Arus Eddy

Coils, impedance planes, lift-off and how a crack changes the signal.

  • 11 interactive lessons
  • HK-EC 2 eddy current simulator
  • Level II workbook
  • Question bank, 127 questions
Rp500.000Rp700.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart
Porosity shows as dark spots on a weld radiograph.

Radiographic Testing

Uji Radiografi

Exposure, film density, unsharpness and reading a weld radiograph.

  • 15 interactive lessons
  • HK-XR 300D exposure trainer
  • Level II workbook
  • Question bank, 151 questions
Rp500.000Rp700.000
Promo price until 31 December 2026 Try Lesson 1 free Add to cart

Learn it online. Prove it offline.

The photos below are real screens from inside the courses. You do the theory and practice at home. The hands-on training and the exam happen in Batam.

UT lesson with a probe on a plate and the A-scan beside it
Photo 1. Interactive lesson: move the probe and the signal changes. Narrated in Indonesian and English.
HK-UT 6 flaw detector simulator with a 60° angle probe on a weld plate and a flaw echo on the screen
Photo 2. Equipment simulator: set it up, scan, and find the flaw yourself.
An MT workbook page in the course viewer
Photo 3. The Level II workbook, read online, picking up from your last page.
A multiple-choice question in the timed mock exam with the question navigator
Photo 4. Question bank and mock exam: 40 questions, 60 minutes.
Online, any time
  1. 1Register freeCreate an account and try Lesson 1 of every method before you pay anything.
  2. 2Learn by doingShort animated lessons that stop and ask you to act: slide, tap, sort and answer.
  3. 3Read the workbook, practise questionsThe bilingual Level II workbook comes with quizzes, a cheat sheet and the answer key. The question bank gets you ready for the exam.
Offline, in Batam 4 Qualify in person in Batam Hands-on training and the Level II qualification exam, following SNT-TC-1A, happen in person at our Batam training centre. For RT, the practical is film interpretation. Ask about training dates on WhatsApp Note: this course is not an ASNT certification.
Muhammad Ariq Fauzan teaching an NDT class

Your mentor

He trains NDT technicians and wrote every lesson and workbook on this site.

Author and instructor
Muhammad Ariq Fauzan
Qualification
ASNT NDT Level III in six methods: MT, PT, UT, VT, ET, RT
ASNT certificate no.
327922
Training centre
Batam

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