เครื่องทดสอบแรงตกกระแทกจากด้านบน (Dart Drop Impact Tester)   สำหรับทดสอบวัสดุประเภทที่มีความยืดหยุ่น เช่น ฟิล์ม พลาสติก หรือกระดาษ ในการฉีกขาด หรือถูกเจาะขาด ตัวเครื่องจะคำนวนพลังงานที่ใช้ในการทำให้วัสดุทดสอบเสียหาย ซึ่งการทดสอบประเภทนี้ ก็จะยึดตามมาตรฐาน ASTM หรือ ISO ที่มีข้อกำหนดระบุไว้อย่างชัดเจน

The Ray-Ran Manual Advanced Falling Dart Impact Tester provides simpler method for determining the energy that causes thin flexible materials such as plastic film, paper and composite sheets to fail under specified conditions of impact from a free-falling dart. The energy required to cause Initial Failure to the test specimen is expressed in terms of the darts weight which would result in the failure of 50% of specimens being tested. The instrument complies with the ASTM D1709 Method A& B and ISO7765 part 1.

Utilizing on-board microprocessor technology, the Ray-Ran Microprocessor Controlled Falling Dart Impact Tester has taken falling dart testing machines to an advanced level at an affordable price. Built with operator simplicity in mind, its ease of operation and high accuracy makes it ideal for product development and quality control within production, research & development labs and teaching institutions.

The large on-board liquid crystal display (LCD) provides simple on-screen instruction and using the alpha/numeric membrane keypad test parameters such as usernames, material reference numbers, batch numbers and dart types are entered and stored in operator lists for future recall and results presentation. Selecting the type of test is done at the press of a button and the testing parameters such as drop height; dart weight and sample size are entered to give the required testing conditions.

To comply with the relevant test standards, a fixed dart drop height of 660mm and 1 ½” spherical radius tup (method A,) and optional 1524mm height and 2” spherical radius (method B) are used. The dart release mechanism is pneumatically actuated and requires the use of both hands to release the dart to ensure maximum operator safety. A clamp guard is also supplied to ensure the operators safety from falling and rebounding darts which can be removed for easy dart retrieval. 

The methods of holding the test specimen and releasing the dart are designed so that they may be accurately repeated for each test performed. Test specimens are simply clamped in the unique two-piece clamp system which gives a constant tension across the surface area of the specimen ensuring test repeatability. A dart of a known weight is then allowed to free fall and hit the sample. The addition or removal of known weights determine the Initial failure of the sample.

Fails and Non fails are stored and automatically plotted then calculated to give the final result making the test easier for the operator.

An optional floor mounted stand and method B testing kit are available. 

The apparatus is supplied as standard with Ray-Ran’s Techni-Test Windows based PC software for connection to the apparatus via a mini USB or ethernet connection. Test results can be printed directly from the Techni-Test software or can be saved and exported as .CSV files which can be opened with Microsoft Excel in tabular form which can be manipulated to your specific requirements such as preparing a graphical presentation or copying the results to a Word document for a report presentation if required

Manual Advanced Falling Dart Drop Impact Tester

The Ray-Ran Manual Advanced Falling Dart Impact Tester provides simpler method for determining the energy that causes thin flexible materials such as plastic film, paper and composite sheets to fail under specified conditions of impact from a free-falling dart.

Specifications

• Conforms to ISO 7765 and ASTM D1709 methods A
• Built in Microprocessor
• Bench mounted
• Pneumatically operated
• Simple set up and operation
• Low maintenance.
• Unique constant tension sample clamping
• 2 hand safety operation for clamp and dart release
• Fixed height assembly 0.66mtrs
• Method A 1.5” aluminium tup and weight set.
• Set of 2 x 5g, 8 x 15g, 8 x 30g, 8 x 60g  weights
• Fail, non-fail test counters

Optional ancillaries

• Method B test kit (includes) - 2” stainless steel tup, weight set 2 x 15g, 8 x 45g, 8x 90g, 1524mm height post, remote dart clamp switch.
• Floor mounted stand
• Phenolic, Stainless steel, Aluminium, Composite Darts
• Custom Darts on request

Falling Dart Drop Impact Advance Tester 43-62

Determine energy to fail specimen under specified conditions
Impact from a free-falling dart
Energy required to tear or puncture the test specimen is expressed in terms of the dart weight
Tested per ASTM and ISO testing standards.

Falling Dart Drop Impact Tester 43-61-01

For Film and Foil Testing, Package Testing Equipment, Plastic Testing
Complying with the ASTM D1709 Method A & B
Apparatus uses photo electric cells to measure the energy (joules)
At least sixty drops for each sample to gain a good result.
Feature Break Mass test

Falling Weight Dart Drop Impact Tester  43-60

Comply to ISO6603, ISO3127 and ASTM D2444
Utilizing both pneumatic and electrical functions
2 meter variable drop height
Reach impact velocities up to 6.26 m/s.
Impact energy range of up to 314 joules

Falling Dart Drop Impact Tester  43-61-01

Comply to ASTM D 1709-62 Procedure A, ASTM D 1709-62 Procedure B, ISO 7765
Unique two piece pneumatic clamp, giving a constant tension across the surface area
Impact test standards dart drop tower heights of either 660mm or 1500mm, telescopic height adjust
A fully electrical interlocked guard