[1] Compression test should be carried out on the actual rubber fenders and the performance (absorbed energy and maximum reaction) of the fender should be confirmed.
[2] The test result should be compared with the figures in the specification. Correction factor shouldn’t be applied to the test result if that is not described in the specification.
[3] The performance of rubber fenders is expressed by value of energy absorbed during the compression of fender up to the prescribed deflection and the maximum value of reaction load thus generated.
The prescribed deflection is the deflection at which the ratio (E/R) of the value of energy absorption (E) to the value of reaction load (R) derived from the standard performance curve for fender, makes maximum.
[4] In the performance test of rubber fenders, vertical compression test is used in general. Angular compression test is to be carried out if necessary. The compression process at the speed 2~8cm per minute is to be repeated for three times up to the prescribed deflection. The average data obtained in the second and third tests shall be the performance values. The average value shall be more than the prescribed performance value for the energy absorption and than the prescribed performance value for the maximum reaction load.
[5] The specimen for testing of rubber fenders shall be one piece per ten pieces.
[6] The compression machine for test of rubber fenders should be inspected periodically and certified by the inspection organization.
[7] The compression machine for test of rubber fenders should be equipped with the scale which shows the actual value of reaction.
[8] If any specimen for test of rubber fenders does not satisfy the specifications, retest shall be conducted on one piece per five pieces of the remainder, excluding the rejected specimens If this results in further rejects, tests shall be conducted on the all remainders.
JIER 2000T Fender Compressive Testing Apparatus:
The fender compressive testing apparatus is mainly used in normal and sampling testing.
It is equipped with pressure & displacement transducers on the apparatus. The pressure and displacement signal are sent to a computer during the compressive testing so the performance curve can be gained simultaneously.
Click below to learn more of JIER Marine Fender Systems:
Arch Fender
JIER manufactures two types Arch Fenders, JDA-A and JDA-B. The JDA-A fender has a rubber contact face ideal for all general purpose applications...
Cylindrical Fender
Cylindrical Fenders are simple to install and operate which makes these units an economical solution for remote locations and for multi user berths...
Cone Fender
All Cone Fenders are single piece mouldings so they are robust, long lasting and easy to install. UHMW-PE faced steel frontal frames are generally used...
Super Cell Fender
Cell Rubber Fender here mentioned is improved over the ordinary type. It has high absorption energy per unit weight and low tilt compression performance...
D Fender
D Fenders can be pre-curved, chamfered and drilled to aid installation at a relatively low cost and can also be cut to the length required ...
Wing Fender
JIER Wing Type Rubber Fenders are developed on the basis of D Type Rubber Fenders. They can be fixed with double line anchors which greatly ...
Square Fender
Square Rubber Fenders offer similar advantages to D fenders and are typically used where a stiffer fender is required. Square Rubber Fenders...
Unit Element Fender
Unit Element Fenders are a high performance, modular system. Element Fenders can be combined in unlimited permutations of length, orientation and Energy...
Roller Wheel Fender
Roller and Wheel Fenders are commonly used on the berth corners and dock entrances, also widely installed along the walls of dry docks and other...
Tug Fender
Tug fenders must work harder, for longer and under more adverse conditions than any other fender type. Tug fenders can be divided into three main types...
Pneumatic Rubber Fender
Pneumatic Rubber Fenders have been in use for around 50 years. The development of the Pneumatic Fender has progressed through ...
Foam Filled Fender
Foam Filled Fenders are versatile, robust and suitable for almost all applications. The manufacturing process allows for virtually any size of fender to be...
Keyhole Fender
Keyhole Fenders are made of high abrasion resistance rubber. They are specially designed for tugboats and workboats.
Rubber Ladders
Rubber Ladders Fenders are very robust. They are flexible to reduce accidental damage and help protect the wharf from small craft berthing.
Rubber Pads
Rubber Pads (Plates) are designed and produced for the protection of barges, tugboats, water locks and quay walls.Contact Us
Feel free to contact us if you have any comments or inquires and one of our skilled staff representatives will contact you within the next business day.