lack of sidewall fusion= bindingsfout op de naadflank
lack of inter-run fusion= bindingsfout tussen de lasrupsen
Volgens deze site:
http://www.nil.nl/fris28.htm
Dit is een vertaling van:
http://www.twi.co.uk/j32k/protected/band_3/jk41.html

Voor 'lack-of-fusion defects' zie bijv. ook:

'Avoid welding conditions which allow the molten weld metal to roll out in front of the arc. This is the main cause for lack-of-fusion defects, in particular, downhill welding.'
http://www.esabna.com/EUWeb/MIG_handbook/592mig8_3.htm

En:
'Lack of fusion defects can result from any one or a combination of the following causes:
• Mould misalignment;
• Cold pour or late pour;
• Inadequate preheat of the joint;
• Poor burner alignment causing uneven preheating of the two rail ends;'
(etc.)
http://www.wtia.com.au/pdf/TGN-R-04 Aluminothermic weld defe...