Geomembranes are most commonly tested for tensile strength using one of three methods; the uniaxial tensile test described in ASTM D639-94, the wide-strip tensile test described in ASTM D4885-88, and the multiaxial tension test described in ASTM D5617-94. The difference in these three methods lies in the boundaries imposed into the test specimens.
Geomembranes are generally evaluated for tensile strength using one of three techniques; the uniaxial tensile test as per ASTM D639-94, the wide-strip tensile test according to ASTM D4885-88, and the multiaxial tension test in accordance with ASTM D5617-94. The primary difference among these methods is the specification of boundaries for the test specimens.