Test Report

SHOCK ABSORPTION Test Report of High Damping Material ＆ Mounts

Introduction：
- We have 5 different test piececs for shock absorption test. They are HD-800、HD-600(made from our Hai-Damp® rubber)、N101(made from NR )、0201(Made from NBR) and C301(made from IIR).
Testing instruments:
1. HP 5423 Structural Dynamics Analyzer
2. B&K 4366 Accelerometer(4.81PC/ms-2)
3. B&K 2635 Charge Amplifier
4. PCB 480A Power Unit
5. PCB 205M08 Impluse Hammer Kit(0.5mv/lb)
Testing method:
1. Testing device and diagram:
2. After the knocking on the mass ,we can get the test result. (test data and some calculated data are all listed below )

Test results:

Test item Test piece	Knock force (lb)	Natural frequency (fn)Hz	Damping ratio tanδ(%)	Mass (kg)
HD-800 (Hai Damp®)	2000	117.7	22.9	99
HD-800 (Hai Damp®)	1400	159.4	22.9	99
HD-600 (Hai Damp®)	1000	59.2	23.6	99
HD-600 (Hai Damp®)	500	68.6	27.5	99
N-101 ( Natural rubber plate)	1000	32.1	7.2	99
N-101 ( Natural rubber plate)	500	40.6	7.2	99
O-201 (NBR plate )	500	45.8	10.8	43
O-201 (NBR plate )	250	57.3	13.1	43
C-301 (Butyl rubber plate )	500	26.7	11.7	43
C-301 (Butyl rubber plate )	250	30.0	15.2	43

Remarks：
- This test was executed by “ Industrial Technology Research Institute “ in Taiwan. （Test report No.：F78L151）
- HD-800 is our product(Hai Damp®) ,Hardness range 80~85 ˚A and HD-600 is our product(Hai Damp®),Hardness range 60~65 ˚A.
- N-101 is Natural rubber plate, Hardness range 60~65 ˚A.
- O-201 is NBR (oil resistant rubber ) plate, Hardness 60~65 ˚A.
- C-301 is IIR ( Butyl rubber ) plate, Hardness range 55~60 ˚A.
- HD-800、HD-600 series products are made from special syntheticrubber compounds. They have special high damping ratio,high temperature durability (110 ℃ for long term service) and oil resistant properties.(Under exposure to lubricant,greases, and even gasoline and diesel, HD–series product will not swell and they will perform as usual)

Dynamic properties of various material pieces (All are prepared by compression molding )

Test pieces	Mass (kgf)	frequency (HZ)	amplit (mm)	Kd (kgf/mm)	tan δ	Hardness	Sp.gr.
Hai Damp® Pad HD-700	60	5	2	28.5	0.24	75A	1.306
	60	15	1	46.5	0.26
	60	30	0.5	56.5	0.28
	60	50	0.3	70	0.29
Hai Damp® Pad HD-800	60	5	2	30.8	0.14	85A	1.465
	60	15	1	58	0.23
	60	30	0.5	100	0.28
	60	50	0.3	120.5	0.28
NRC-1 (Research center formula)	60	5	2	30.2	0.14	60A
	60	15	1	42.7	0.15
	60	30	0.5	51.3	0.14
	60	50	0.3	59.5	0.12
S Brand （Europe）	60	5	2	30.3	0.19	81A	1.303
	60	15	1	53.8	0.27
	60	30	0.5	77	0.3
	60	50	0.3	96.5	0.3
AVM2 (NR/SBR blend)	60	5	2	30.2	0.23	55A
	60	15	1	49	0.26
	60	30	0.5	68	0.26
	60	50	0.3	87	0.24
AVM5 (BIIR Pad )	60	5	2	30.7	0.17	75A	1.213
	60	15	1	59	0.27
	60	30	0.5	80	0.28
	60	50	0.3	99.5	0.3
AVM7 (Acrylic rubber pad)	60	5	2	29.7	0.15	73A
	60	15	1	59	0.25
	60	30	0.5	104	0.28
	60	50	0.3	138	0.26

Remarks：
- This test was executed by “ Chung–Shan Institute of Sience ＆Technology “ in Taiwan.
- This test result reveals the truth :Damping ratios(tanδ) of Hai Damp® series material are similar to that of S brand(an European brand),and are superior to others .

Dynamic and Static Properties of various Vibration Mounts

Test Mount	Mass(kgf)	Frequency(HZ)	amplitude (+/- mm)	Kd (kgf/mm)	tanδ	Ks (kgf/mm)	Kd/Ks	Hardness
Hai Damp® HD-800	1000	5	0.5	1735	0.28	706	2.46	80A
Hai Damp® HD-800	1000	15	0.1	3120	0.3	706	4.42	80A
S brand (an European product)	1000	5	0.5	1386	0.26	681	2.04	81A
S brand (an European product)	1000	15	0.1	2460	0.23	681	3.61	81A
TK12080	1000	5	0.5	1570	0.13	673	2.33	82A
TK12080	1000	15	0.1	2785	0.14	673	4.14	82A
Febrica 52224 M12	450	5	0.5	788	0.2	430	1.83	81A
Febrica 52224 M12	450	15	0.1	1310	0.2	430	3.05	81A

Remarks：
- This test was executed by “ Chung–Shan Institute of Sience ＆Technology “ in Taiwan.
- TK12080 and Febrica52224 mounts are products of local companies in Taiwan.
- From this test result, we can get the conclusion: Hai Damp®-800 vibration mount has the best Damping ratio in the above test.