
Kuiz 1 Destructive Test
Authored by HAFIZUL KPM-Guru
Science
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah tujuan utama ujian macro etch?
Mengukur kelajuan pengecutan
Mendedahkan penembusan kimpalan dan struktur makro
Mengesan retakan mikro
Memeriksa kemasan permukaan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Standard manakah merangkumi ujian macro etch untuk struktur logam
ASTM E290
ASTM A561
AWS D1.1
SME IX
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Etchant apa yang biasa digunakan untuk ujian macro etch keluli karbon
Asid hidrofluorik
Nital Solution
Hanya asid sulfurik dan nitrik
Etching elektrolitik sahaja
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Semasa penyediaan spesimen untuk ujian macro etch, permukaan perlu digilap sekurang‑kurangnya hingga grit
240
600
1200
Tidak perlu digilap
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Menurut ASTM E381, apakah yang akan terdedah selepas macroetch
Retakan mikro sahaja
Susunan butir (grain flow), porositi, retakan
Variasi kekerasan
Warna Kimpalan
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah tujuan utama nick break test?
Ukur tenaga impak
Menilai kimpalan, porositi, dan kekotoran slag
Tentukan kekerasan bahan
Memeriksa struktur mikro HAZ
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Manakah antara berikut BUKAN kecacatan yang dapat dikesan oleh nick break test?
Weld Fusion
Porosity
Slag Inclusion
Hardness
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