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ALTANA Heavy-Duty Impact Tester User Manual

Page 7

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4HE¬'ARDNER¬(EAVY¬$UTY¬6ARIABLE¬(EIGHT¬
)MPACT¬4ESTER
¬IS¬WIDELY¬USED¬TO¬TEST¬THE¬IMPACT¬
RESISTANCE¬OF¬COATINGS¬AND¬A¬VARIETY¬OF¬RIGID¬
MATERIALS¬INCLUDING¬PLASTIC¬SHEET¬AND¬MOLDED¬
PLASTICS¬)MPACT¬TESTING¬OF¬COATINGS¬IS¬CONSIDERED¬
A¬mEXIBILITY¬TEST¬4EST¬PANELS¬OR¬COATED¬PARTS¬MAY¬
BE¬STRUCK¬ON¬EITHER¬THE¬COATED¬OR¬THE¬UNCOATED¬
SIDE¬4HE¬LATTER¬IS¬REFERRED¬TO¬AS¬hREVERSE¬
IMPACTv¬%XAMINATION¬MAY¬BE¬DONE¬VISUALLY¬FOR¬
SIGNS¬OF¬FAILURE¬SUCH¬AS¬CRACKING¬OR¬mAKING¬OR¬
INSTRUMENTALLY¬WITH¬A¬PINHOLE¬DETECTOR¬7HEN¬METAL¬
SUBSTRATES¬ARE¬INVOLVED¬RIGID¬PARTS¬OR¬SHEETS¬UP¬
TO¬v¬THICK¬ARE¬USUALLY¬VISUALLY¬EXAMINED¬FOR¬TYPE¬
AND¬EXTENT¬OF¬DAMAGE¬SUCH¬AS¬SPLITTING¬SHATTERING¬
CRACKING¬OR¬PENETRATION¬

4EST¬-ETHODS¬

6ARIOUS¬ASSOCIATION¬AND¬COMPANY¬TEST¬
SPECIlCATIONS¬DElNE¬METHODS¬OF¬TESTING¬AND¬
EVALUATION¬PARAMETERS¬!MONG¬THESE¬ARE¬!34-¬
$¬!34-¬' ¬AND¬!34-¬$ ¬
3OME¬PUBLISHED¬SPECIlCATIONS¬REQUIRE¬MINOR¬
MODIlCATION¬TO¬THE¬STANDARD¬'ARDNER¬)MPACT¬
4ESTER

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