A FOUR CHANNEL SHOCK AND IMPACT STIMULATION SYSTEM, CONSIST OF FOUR HIGH VELOCITY HYDRAULICALLY DRIVEN ACTUATORS AND ASSOCIATED HARDWARE. THE ACTUATORS ARE ESSENTIALLY PISTONS DRIVEN BY HIGH PRESSURE OIL, VIA ACCUMULATORS MOUNTED ON THE BODY OF THE PISTONS. THE COMPLETE SYSTEM CONSISTS OF FOUR ACTUATORS, TWO SMALL AND TWO LARGE. ASSOCIATED WITH THE ACTUATORS ARE; A DATA ACQUISITION SYSTEM FOR MEASURING ACCLERATION AND POSITION OF THE ACTUATORS TO ENABLE THEM TO BE CONTROLLED, USING A DEDICATED CONTROL SYSTEM, A HYDRAULIC POWER SUPPLY, FOR CHARGING THE ACCUMULATORS WHICH DRIVE THE ACTUATOR WITH OIL AND GUIDE RAILS FOR SUPPORTING MASSES AND 'PROGRAMMERS' WHICH ARE FIXED TO THE ENDS OF THE ACTUATOR PISTONS. THE PROGRAMMERS ARE SIMPLY ELASTOMERIC FACINGS WHICH FIT ON THE FACE OF EACH MASS ATTACHED TO EACH ACTUATOR. THE ACTUATORS ARE USED TO STIMULATE THE EFFECTS OF SHOCK OR IMPACT ON STRUCTURAL TEST SPECIMENS (SUCH AS WALLS, COLUMNS, CLADDING PANELS, BEAMS). THE ACTUATORS ARE USED SINGLY OR IN COMBINATION TO LOAD TEST SPECIMENS WITHIN A CONTROLLED LABORATORY ENVIRONMENT. THE MASSES ON THE ENDS OF THE ACTUATORS ARE ALLOWED TO COLLIDE WITH THE TEST SPECIMEN TO PROVIDE A HIGH ENERGY IMPULSIVE LOADING SO THAT STRUCTURAL RESPONSE CAN BE MEASURED AND OBSERVED. THE OUTPUT OF THE TESTS IS TO ASSIST WITH ACADEMIC RESEARCH AT THE UNIVERSITY OF BATH. THE VALUE OF THE COMPLETE SYSTEM IS $2,100,000.

A FOUR CHANNEL SHOCK AND IMPACT STIMULATION SYSTEM IS CLASSIFIED TO COMMODITY CODE 9024801900 IN ACCORDANCE WITH THE FOLLOWING: GENERAL INTERPRETATIVE RULES (GIR) GIR1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 9024 MACHINES AND APPLIANCES FOR TESTING THE HARDNESS, STRENGTH, COMPRESSIBILITY, ELASTICITY OR OTHER MECHANICAL PROPERTIES OF MATERIALS (FOR EXAMPLE, METALS, WOOD, TEXTILES, PAPER, PLASTICS) GIR6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL.9024 80 OTHER MACHINES AND APPLIANCES ELECTRONIC TARIC CODE 9024801900 OTHER THAN FOR TESTING TEXTILES, PAPER OR PAPERBOARD. SECTION AND CHAPTER NOTES SECTION XV111 ADDITIONAL NOTE1.TO CHAPTER 90 FOR THE PURPOSE OF SUBHEADINGS 90248019 THE EXPRESSION 'ELECTRONIC' MEANS INSTRUMENTS AND APPARTUS WHICH INCORPORATE ONE OR MORE ARTICLES OF HEADING 8540, 8541, OR 8542 BUT FOR THE PURPOSES OF FOREGOING, NO ACCOUNT SHALL BE TAKEN OF ARTICLES OF HEADING 8540, 8541 OR 8542 WHICH HAVE SOLELY THE FUNCTIONS OF RECTIFYING CURRENT OR WHICH ARE INCLUDED IN THE POWER PACK OF INSTRUMENTS OR APPARTUS. HARMONISED SYSTEM EXPLANATORY NOTES THIS HEADING COVERS A WIDE RANGE OF MACHINES AND APPLIANCES FOR TESTING THE HARDNESS, ELASTICITY, TENSILE, STRENGTH, COMPRESSIBILITY OR MECHANICAL PROPERTIES OF VARIOUS MATERIALS (EG, METALS, WOOD, CONCRETE). (C)(1) IMPACT TESTS CARRIED OUT ON BARS (WHETHER OR NOT MOTCHED). THE BAR RESYS ON TWO SUPPORTS AND IS SUBJECTED TO THE REPEATED IMPACTS OF A RAM UNTIL IT BREAKS; ITS LIMITING RESISTANCE IS THUS DETERMINED. (IV) MACHINES AND APPLIANCES FOR TESTING OTHER MATERIALS MOST OF THESE MATERIALS (eg WOOD, CONCRETE, HARD PLASTICS) ARE SUBJECTED TO TENSILE, BENDING, HARDNESS, COMPRESSION, SHEARING, ABRASION, ETC, TESTS BY MEANS OF MACHINES AND APPARTUS SIMILAR IN PRINCIPLE TO THOSE USED FOR METAL TESTING ( BY BALL-IMPRINT, IMPACT ETC).