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BS ISO 16840-2:2018 – TC:2020 Edition

BS ISO 16840-2:2018 – TC:2020 Edition

$217.84

Tracked Changes. Wheelchair seating – Determination of physical and mechanical characteristics of seat cushions intended to manage tissue integrity

Published By Publication Date Number of Pages
BSI 2020 86
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PDF Catalog

PDF Pages PDF Title
1 compares BS ISO 16840‑2:2018
2 TRACKED CHANGES
Text example 1 — indicates added text (in green)
3 National foreword
Compliance with a British Standard cannot confer immunity from legal obligations.
This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 200731 January2018.
Amendments/corrigenda issued since publication
4 Wheelchair seating —
5 COPYRIGHT PROTECTED DOCUMENT
8 Foreword
9 Introduction
10 Wheelchair seating —
1 Scope
2 Normative references
11 3 Terms and definitions
3.1
3.1.1
3.1.2
3.23.1.2.1
12 3.2
4 Symbols and abbreviated terms
l overall length
t time for the recording period (associated units: s = seconds; d = days)
hth cushion thickness
5 Apparatus
5.1 Loading rig
13 5.2 Rigid cushion loading indenter (RCLI)
5.3 Impact damping rigid cushion loading indenter (IDRCLI)
5.4 Force application rig
5.5 Displacement gauge
5.6 Impact damping rig
16 Figure 1 — Loading rig showing the reference plane on the top surface of the RCLI in plain view and a displacement gauge
18 Figure 2 — Impact damping rig
19 5.7 Loaded contour indenter (LCI)
20 5.8 Seat cushion thickness measurement rig
65.9 Test environment
21 Figure 3 — Loaded contour indenter
7.16.1 Choice of cushion
7.26.2 Preconditioning the cushion
7.36.3 Setup
22 87 Sequence of testing
8 Frictional properties
8.1 Rationale
8.2 Test method
8.3 Test report
9 Load-deflection and hysteresis test
9 Impact damping under normal loading conditions
9.1 Rationale
23 9.2 Test method
25 Figure 4 — Typical result for impact damping test, plotting acceleration against time in milliseconds
9.3 Method of calculation
26 9.4 Test report
27 10 Frictional properties
10.1 Rationale
10.2 Test method
10.3 Test report
11 Impact damping under normal loading conditions
11.1 Rationale
11.2 Test method
29 1210 Recovery
12.110.1 Rationale
12.210.2 Test method
30 12.310.3 Test report
31 1311 Loaded contour depth and overload deflection
13.111.1 Rationale
13.211.2 Test method
32 Figure 5 — Measurement method for concave and convex seat cushion top surfaces
33 13.311.3 Method of calculation
13.411.4 Test report
1412 Water spillage
14.112.1 Rationale
14.212.2 Test method
14.312.3 Test report
1513 Biocompatibility
15.113.1 Rationale
15.213.2 Test method
34 15.313.3 Test report
14.1 Rationale
14.2 Test method
14.3 Method of calculation
35 14.4 Test report
1615 Test report
1716 Disclosure requirement
36 (normative)
37 Figure A.1 — Assembly of components for RCLI
38 Table A.1 — Cone and sphere dimensions
40 Table B.1 — Typical ranges
42 Annex C
(informative)
C.1 Apparatus
C.1.1 Lateral and forward stiffnessmovement rig
44 Figure C.1 — Apparatus to measureLateral and forward movement rig ready for testing lateral and forward stiffness
47 C.3 Sliding resistance
C.3.1 Rationale
C.3.2 Test method
48 Annex D
(informative)
Table D.1 — Dimensional properties RCLI for alternatively sized cushions
Table D.2 — Key parameters for use of RCLI for alternatively sized cushions
49 Bibliography
52 National foreword
57 Foreword
58 Introduction
59 1 Scope
2 Normative references
3 Terms and definitions
60 4 Symbols and abbreviated terms
5 Apparatus
5.1 Loading rig
61 5.2 Rigid cushion loading indenter (RCLI)
5.3 Impact damping rigid cushion loading indenter (IDRCLI)
5.4 Force application rig
5.5 Displacement gauge
5.6 Impact damping rig
64 5.7 Loaded contour indenter (LCI)
5.8 Seat cushion thickness measurement rig
5.9 Test environment
65 6 Preparation of test cushion
6.1 Choice of cushion
6.2 Preconditioning the cushion
66 6.3 Setup
7 Sequence of testing
8 Frictional properties
8.1 Rationale
8.2 Test method
8.3 Test report
9 Impact damping under normal loading conditions
9.1 Rationale
9.2 Test method
68 9.3 Method of calculation
9.4 Test report
10 Recovery
10.1 Rationale
10.2 Test method
69 10.3 Test report
70 11 Loaded contour depth and overload deflection
11.1 Rationale
11.2 Test method
71 11.3 Method of calculation
72 11.4 Test report
12 Water spillage
12.1 Rationale
12.2 Test method
12.3 Test report
13 Biocompatibility
13.1 Rationale
13.2 Test method
13.3 Test report
14 Hysteresis test
14.1 Rationale
73 14.2 Test method
14.3 Method of calculation
14.4 Test report
15 Test report
74 16 Disclosure requirement
75 Annex A (normative) Tapered uniform geometry RCLI
77 Annex B (informative) Typical ranges for ISO 16840‑2 tests and indicative cushion implications
79 Annex C (informative) Horizontal stiffness and sliding resistance
83 Annex D (informative) RCLIs for testing of alternatively sized cushions
84 Bibliography

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BS ISO 16840-2:2018 - TC
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