Machine

Requirements

1.Client

Tensile testing machine that is capable of performing standardized tensile testing of various materials within the maximum force capacity.

2.User

Must have an intuitive and simple UI. Machines should require only a single user to operate. Test parameters should be comprehensive and easy to change.

3.Safety

Must allow use of optional shield to protect users from fracture debris. Jaw clamp shields to prevent pinch hazards during loading and unloading of specimens.

4.Standard

Must meet or exceed the following ASTM, ISO and other international standards.

ASTM E4, BS 1610, DIN 51221, ISO 7500/1, EN 10002-2. JIS B7721, JIS B7733, and AFNOR A03-501 standards.

Thickness of test specimen 1-14mm

Must accept types 1-5 specimens

Extension must be sufficiently long to account for failure of intended specimens

Long axis of specimen will coincide with load direction. Ref 5.1.3.1, 5.1.3.2

Slippage relative to grips is prevented “as much as possible”. Ref 5.1.3.3

Total drivetrain strain shall not exceed 1% of total gage strain Ref 5.1.6

Load sensor shall be practically free of inertial lag Ref 5.1.5

Load sensor accuracy within 1% of true value Ref 5.1.5

Load sensor verified IAW ASTM E4 Ref 5.1.5

Displacement sensor shall be practically free of inertial lag Ref 5.1.7

Displacement sensor accuracy within 10% of true value Ref 5.1.7

Extensometer must automatically record and correlate load / extension data Ref 5.2

Extensometer must be set at the gage length of specimen Ref 5.2

Extensometer maximum error will not exceed .0002 for E measurements Ref 5.2.1

Extensometer shall satisfy B-2 classification IAW ASTM E83 Ref 5.2.1

Extensometer error shall be within 10% of true value Ref 5.2.3

5.Law

Must not violate IP law

6.Environment / Sustainability

All manufacturing processes in the production of the device shall conform to or exceed whatever is left of EPA’s standards.

7.Cost efficiency

Should be optimized.

8.Weight

Not a design constraint. Device will not be moved, deflect, and weight enhances stability of system